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Pawsitvely Posh joins Greene County Partnership
Pawsitively Posh Pet Resort & Spa has joined the Greene County Partnership. The business opened in November 2023 and offers boarding, grooming, bathing, doggie daycare, socialization, and personalized care. Since
‘Resident Evil’ scares up franchise-best $60 million premiere, pushing horror to new box office record
This year’s slate of horror films have put 2026 in contention for the highest grossing box office year in the genre’s history following the $60 million franchise-best open for Zach Cregger’s ‘Resident Evil.’
Packers win bizarre overtime game despite almost impossible offensive stat
Green Bay produced only one successful third-down conversion and fewer than 200 yards, yet somehow escaped with a victory.
Crowne Plaza Phu Quoc Starbay Brings Business Events and Island Experiences Together in Northern Phu Quoc
/PRNewswire/ -- As organisations place greater value on meaningful connections, event planners are increasingly seeking destinations that combine convenience,...
Zach Sieler on Dolphins needing to create more pressure
Zach Sieler on Dolphins needing to create more sacks
Trump says he will form AI Force to be led by ‘czar’
President Donald Trump announced Saturday that he is forming an “AI Force” and will soon name an artificial intelligence “czar” to lead the effort.
Global science literacy body makes debut in Beijing
A new international science organization made its debut on Sunday at the opening ceremony of the 2026 World Conference on Science Literacy in Beijing.
Carrot Top rep provides promising health update after comedian’s hospitalization
Comedian Carrot Top, whose real name is Scott Thompson, is ‘breathing on his own’ two days after his hospitalization in Las Vegas.
Chugiak student takes advocacy of darkness-related health issues to National Civics Bee
Elara Bradley, 13, won the state civics bee finals in June, punching her ticket to the National Civics Bee in Washington, D.C., next month.
Predicting The Washington Wizards Depth Chart After Finalizing Their Roster
After re-signing veteran leader and fan favorite Anthony Gill to a one-year deal, the Washington Wizards' depth chart is finally finalized. With this revamped roster and a potential postseason push, the Wizards' lineup will no doubt look very different from last season. Ahead of one of the most exciting Wizards seasons since the John Wall-Bradley …
'Resident Evil' tops box office with franchise best debut of $60 million
Zach Cregger’s “Resident Evil” gave the North American box office a shot in the arm in its first weekend in theaters. The Sony Pictures release earned $60 million in ticket sales from 3,684 locations in the U.S. and Canada, according to studio estimates Sunday. That’s a best for the video…
Elizabeth Hurley, 61, Poses in Peach Bikini and Shares Sunset Kiss With Billy Ray Cyrus in New Update
Fans were in awe of her ageless beauty as she flaunted her ongoing romance.
Elizabeth Hurley, 61, Poses in Peach Bikini and Shares Sunset Kiss With Billy Ray Cyrus in New Update
Fans were in awe of her ageless beauty as she flaunted her ongoing romance.
Elizabeth Hurley, 61, Poses in Peach Bikini and Shares Sunset Kiss With Billy Ray Cyrus in New Update
Fans were in awe of her ageless beauty as she flaunted her ongoing romance.
GOP Rep. Salazar says she spoke with Trump and he is ‘very receptive’ to her warning about Hispanic voters
GOP Rep. Maria Elvira Salazar Sunday said that President Donald Trump was “very receptive” to her warning that Hispanic voters feel “betrayed” by his immigration agenda ahead of the midterm elections.
US Forest Service closing 23 research facilities as part of overhaul under Trump
MONTANA Forest Service closing stations BILLINGS — The U.S. Forest Service is closing 23 research and development stations in more than a dozen states as part of an organizational overhaul under President Donald Trump that is intended to trim costs and concentrate the agency’s resources in Western states, officials said Sept. 3. The work being […]
Knoxville shoppers support small businesses across the country at Vintage Market Days
Vintage Market Days of Knoxville returned to the Expo Center for three days of the community supporting small businesses and nonprofit organizations.
Knoxville shoppers support small businesses across the country at Vintage Market Days
Vintage Market Days of Knoxville returned to the Expo Center for three days of the community supporting small businesses and nonprofit organizations.
Huawei Pura X View hands-on reveals unusually wide smartphone
Huawei’s Pura X View pairs an unusually wide 16:9.5 OLED display with strong cameras, a 7,000 mAh battery and a design praised for comfortable typing, reading, video and gaming. However, importing the smartphone may not be ideal due to uncertain global software optimization and app compatibility.
Rep. Salazar tells Trump on Hispanic voters: "Preserve that fortune that you have brought" the GOP
Zach Bako-Bewele will not return
Packers OT Zach Bako-Bewele ruled out after suffering knee injury
Ed Sheeran addresses Gaza and Macklemore controversy at Philly tour stop
At his first concert since controversy roiled his North American tour, Ed Sheeran said he is "deeply...
Ed Sheeran addresses Gaza and Macklemore controversy at Philly tour stop
At his first concert since controversy roiled his North American tour, Ed Sheeran said he is “deeply worried” by venues influencing performances after opener Macklemore was fired from the concert
Anguissa suffers new injury issue after Fiorentina 1-1 Napoli
Napoli midfielder Andre-Frank Zambo Anguissa was brought on in the 90th minute of Napoli’s 1-1 draw away against Fiorentina on Sunday, but that was long enough for him to suffer a new injury issue, ...
‘Resident Evil’ Reboot Shatters Franchise Record With $60 Million Opening Weekend
It’s also the biggest opening so far for director Zach Cregger, whose film “Weapons” was a breakout hit in 2025.
Box Office: ‘Resident Evil’ tops box office with franchise best debut of $60 million
Zach Cregger’s “Resident Evil” is giving the North American box office a boost in its first weekend.
Box Office: 'Resident Evil' tops box office with franchise best debut of $60 million
Zach Cregger’s “Resident Evil” is giving the North American box office a boost in its first weekend.
Box Office: 'Resident Evil' tops box office with franchise best debut of $60 million
Zach Cregger’s “Resident Evil” is giving the North American box office a boost in its first weekend | WBBM Newsradio 780 AM & 105.9 FM
Box Office: \'Resident Evil\' tops box office with franchise best debut of $60 million
Zach Cregger’s “Resident Evil” is giving the North American box office a boost in its first weekend. Sony Pictures says Sunday that the film has earned an estimated $60 million
The 20-Year-Old System Running Your Business Is A Leadership Risk
The technology nobody wants to touch carries more risk than anyone’s tracking. A conversation with a modernization expert reveals why that risk belongs to leadership, not IT.
BlizzCon 2026 Debuts Halftime Show With YOASOBI
The J-pop duo electrified the Overwatch World Cup as Simu Liu, T-Pain, deadmau5 and more joined Blizzard's long-awaited return to Anaheim.
Zara Larsson Hits Her Career Peak As Her Album Mounts A Comeback
Zara Larsson’s ‘Midnight Sun’ debuts in the Vinyl Albums top 10 as the project and its title track surge across multiple Billboard charts.
Parental rights group questions student data, portal tied to mental health screenings
(The Center Square) – An Illinois parental-rights organization is raising concerns about how student information could be handled through BEACON, a state behavioral health portal that Awake Illinois describes as
‘Resident Evil’ Scores a Bloody Good $60 Million Box Office Opening
Zach Cregger sets a franchise and personal opening weekend record with his gory Sony video game adaptation
Box Office: ‘Resident Evil’ Breaks Franchise Records With $60 Million Opening Weekend
“Weapons” director Zach Cregger has electrified the box office again, this time with his take on “Resident Evil.” His reboot of the ’90s zombie video game has collected $60 million in its opening week...
🚨 Fulham-Manchester United XIs: Gonzalo starts; Andrey Santos benched
Fulham and Manchester United face off in the Premier League in a blockbuster clash between Arbeloa and Carrick. Here is how both teams line up for the match...FULHAM XIMANCHESTER UNITED XIThis article...
Detroit Free Press on Instagram: "Two teams from the Savannah Bananas traveling baseball tour came to Comerica Park for a pair of games on Sept. 18-19. Rivals the high-energy Party Animals and the stunt-performing Firefighters, brought their brand of baseball entertainment to Comerica Park on Friday and Saturday, turning America's pastime into a mix of sports, comedy, dancing and crowd interaction. Check the link in our bio for more. 📷 by Kimberly P. Mitchell @kpmitchellphoto, Detroit Free Press #detroit #michigan #comericapark #entertainment #bananaball @thefirefighters @thepartyanimals #baseball"
17 likes, 0 comments - detroitfreepress on September 20, 2026: "Two teams from the Savannah Bananas traveling baseball tour came to Comerica Park for a pair of games on Sept. 18-19. Rivals the high-energy Party Animals and the stunt-performing Firefighters, brought their brand of baseball entertainment to Comerica Park on Friday and Saturday, turning America's pastime into a mix of sports, comedy, dancing and crowd interaction. Check the link in our bio for more. 📷 by Kimberly P. Mitchell @kpmitchellphoto, Detroit Free Press #detroit #michigan #comericapark #entertainment #bananaball @thefirefighters @thepartyanimals #baseball".
Ed Sheeran Clarifies Gaza Stance, Again Blames Venues for Kicking Macklemore Off Tour
Sheeran called what’s happening in Gaza “catastrophic, unjustifiable, and disproportionate” but did not take responsibility for the rapper being removed from the show
Blizzard developer says World of Warcraft: Forever's beta numbers are the "craziest" he's seen in 17 years
World of Warcraft: Forever's beta was overwhelmed by players this week, with a Blizzard developer calling the numbers the biggest he's seen in 17 years.
Help Us Fund the "Rethinking Mental Health" Film Festival!
Mad in Norway is asking you and your organization for support. Those who contribute will be given access to recordings of lectures, panel discussions and presentations afterwards.
Patients who fight health insurance denials often win
New data show how often insurers deny prior authorizations that can stall patients’ care — and how frequently those decisions get reversed.
Orlando Science Center opens renovated theater
A lot is happening at the Orlando Science Center. The organization recently reopened the Dome and hosted a series of sold-out laser shows this summer. A new exhibit called “Extreme Sports: Beyond Human Limits” opens in late September, showing visitors what it’s like to rock climb and use a flight suit. To top it off,
Ed Sheeran says situation in Gaza is 'catastrophic and unjustifiable' as he opens concert
Sheeran said he wants his music and shows to be about unity and humanity, not politics.
Human Rights Watch urges Venezuela to 'protect people's basic rights', release political prisoners
In its first official visit to Venezuela in 18 years, Human Rights Watch said its representatives met with interim President Delcy Rodríguez, foreign diplomats, human rights organizations, journalists, and families of those currently incarcerated.
Ravens downgrade WR Zay Flowers to out against the Saints
Flowers was listed as doubtful on Friday but was unable to practice, which placed him in the downgrade
World Organization for Science Literacy
The World Organization for Science Literacy was officially launched in Beijing on September 20, with 32 founding institutions from 21 countries.
Downtown Bethlehem sports bar, restaurant up for sale
Located at 515 Main St., the restaurant and bar is listed for $799,000 and features a full menu, sports viewing and established clientele.
KCCI's full one-on-one interview with Republican governor candidate Zach Lahn
How would Zach Lahn govern Iowa? GOP nominee gets specific on key proposals
Mount Vesuvius Buried These Scrolls for 2,000 Years – Now Scientists May Read Them
Researchers recreated a damaged ancient scroll to test a new way to study the past. Lead in ancient ink could help researchers read the Herculaneum papyri, Roman scrolls buried when Mount Vesuvius erupted in 79 CE. Many are now too brittle to open, and reading them with X-rays poses its own problem. The ink and
Andre-Frank Anguissa can leave Napoli, confirms sporting director
Serie A side Napoli have been struggling regarding a renewal for Andre-Frank Zambo Anguissa and there are signs an exit can go through soon.The Partenopei take on Fiorentina in a league clash today an...
Winner and Loser of the Week in Florida politics
Susie Wiles is cancer-free, María Elvira Salazar breaks with Donald Trump and St. Pete Polls has some bombshells.
Townsend run over by pitch roller in Thailand
Former England winger Andros Townsend jokes that playing Stoke away "wasn't so bad after all" following a bizarre incident before a game in Thailand.
'Babies' review: Child-free couples finally have a comedy that doesn't make them a punchline
Lauren Miller Rogen and Seth Rogen tackle a heteronormative stigma with humor.
It'll be controversial! Liverpool's eye bizarre new transfer
Liverpool have a new transfer plan in mind and it'll prove controversial. The Reds need to have a big think on this one.Liverpool are weighing up their transfer plans for the January transfer window a...
Iranian Academic Outlines Strategic Impacts of Confrontation with US, Israeli Regime
TEHRAN (Tasnim) – University professor Hamid Reza Moqaddamfar outlined 10 strategic consequences of Iran’s confrontation with the US and Israel, arguing that the conflict went beyond the failure of Washington and Tel Aviv to achieve their military objectives and challenged key pillars of US power.
World Organization for Science Literacy debuts in Beijing
World Organization for Science Literacy debuts in Beijing -
World Organization for Science Literacy launched in Beijing
The World Organization for Science Literacy was launched on Sunday at the opening ceremony of the 2026 World Conference on Science Literacy in Beijing.The organization is an international scientific and technological organization initiated with the support
Qatar denies funding Hamas after Israeli report claims Netanyahu ignored warnings over Gaza aid
The report also included quotes from several prominent Israeli politicians reacting to the news and censuring Netanyahu's behavior.
Farage says he wants to ‘hijack’ Trump’s ICE czar to help secure UK border
Reform leader also tells US event Europe should have ‘more sensible view’ of president’s administration
Franciscan Health, Lake Co. Health Department partner for Path to Hope Suicide Awareness & Prevention 5K
CROWN POINT, Ind. – Franciscan Health is partnering with the Lake County Health Department to host the Path to Hope Suicide Awareness & Prevention 5K. The event is scheduled to take place starting with registration at 9 a.m. and the race starting at 10 a.m. on Saturday, Oct. 3 at the Lake County Fairgrounds, Shelter 6, 889 S. Court St. in Crown Point. The event is intended to bring the community together to raise awareness for suicide prevention and mental health, reduce stigma and honor those lost to suicide. Scheduled organizations planning to attend include National Alliance on Mental Illness
Valley organizations team up to provide hot food, health care
A Phoenix-based outreach organization is partnering with a mobile medical clinic to bring health services directly to neighborhoods across the city, including HIV testing and health education.
Valley organizations team up to provide hot food, health care
A Phoenix-based outreach organization is partnering with a mobile medical clinic to bring health services directly to neighborhoods across the city, including HIV testing and health education.
Which Young Player is Most Exciting For Boston Celtics?
Baylor Scheierman? Hugo Gonzalez? One of the draft picks?
Ed Sheeran says situation in Gaza is \'catastrophic and unjustifiable\' as he opens concert
Ed Sheeran opened a concert in Philadelphia with comments about Gaza, saying what’s happening is “catastrophic and unjustifiable.” He said in the Saturday night performance at Lincoln Financial Field that
Ed Sheeran Cries Alone Onstage in Philadelphia: 'I Am Making Mistakes. I'm So, So Sorry. I Don't Want to...
Protesters gathered outside the venue as he addressed Gaza directly for the first time.
D-backs anthem trumpeter makes AMAZING recovery after horn malfunction
PHOENIX -- During their run to the World Series championship in 2001, the Diamondbacks believed trumpeter Dr. Jesse McGuire was regarded by the organization as a good-luck charm when he performed the national anthem. McGuire performed the anthem numerous times during that postseason, including before Game 7. And every five
Phoenix groups team up to bring health care, hot meals to those in need
A Phoenix-based outreach organization is partnering with a mobile medical clinic to bring health services directly to neighborhoods across the city.
Ed Sheeran says situation in Gaza is \'catastrophic and unjustifiable\' as he opens solo concert
Ed Sheeran has opened a solo concert in Philadelphia with comments about Gaza, saying what’s happening is “catastrophic and unjustifiable.” He said in the Saturday night performance at Lincoln Financial
Ed Sheeran weeps on stage, says Israel's actions in Gaza 'unjustifiable' in emotional first speech since Macklemore fiasco
Comedians show support for Carrot Top after hospitalization
Fellow comedians are showing support for Carrot Top on social media after the comic was reportedly hospitalized following a suicide attempt Friday. Carrot Top, whose real name is Scott Thompson, wa…
Business Bash connects students with campus clubs and career opportunities
Students gathered in the Schneider Hall courtyard Sept. 17 to explore business-focused Registered Student Organizations (RSOs), departments, majors, study abroad programs and career resources at the annual Business Bash hosted
IT admins can now remotely “Sanitize” PCs and reinstall Windows 11, thanks to two new features in Cloud Rebuild
Windows 11 Build 26340 upgrades Cloud Rebuild with hardware-level drive sanitization and remote CSP deployment for IT admins. Here is how.
National nurses union hosts rally in Bangor against federal healthcare cuts
Maine organizations representing nurses met with the largest registered nurses union in the nation to push back against federal healthcare cuts in Bangor on Saturday.
Zay Flowers ruled out for Week 2
Baltimore Ravens WR Zay Flowers officially ruled out against the Saints
Voting groups say funding shortfall could affect midterm turnout
Several of the nation’s largest voter engagement and racial justice organizations are facing steep funding shortfalls and staffing cutbacks
Kings G LaVine Setting 'Extremely High' Standards
The Sacramento Kings' injury bug was major last season, with multiple key contributors suffering severe injuries. After returning to full health, Zach LaVine is one player looking to bounce back.
Bengals News: Zac Taylor “Feels Good” about Joe Burrow
The Bengals head to Houston with a couple of questions.
Trump announces new 'AI Force,' vows to protect industry as AI czar announcement nears
Trump's new AI Force mirrors his first-term Space Force creation, with a high-IQ "czar" appointment coming soon to oversee the booming industry.
Bills’ Heartfelt Gesture Makes Highmark Stadium Debut Unforgettable for Buffalo
For over fifty years, Buffalo Bills‘ football thrived in the raw, ice-bound atmosphere of the original Highmark Stadium. Due to the necessity of modern facilities Bills’ went through a transition and now they have a $2.1 billion dollar worth stadium. The stadium finally welcomed the fans and the organization didn’t forget to make it special […] The post Bills’ Heartfelt Gesture Makes Highmark Stadium Debut Unforgettable for Buffalo appeared first on Gridiron Heroics.
Trump says he’s creating an AI force and appointing a czar amid concerns over the rapidly developing technology
The announcement comes as researchers and industry leaders have called for a slowdown in the technology’s development, leading Trump to call the concerns a“hoax.”
Trump to form ‘AI Force,’ name AI czar but rejects calls for constraints
A growing chorus of lawmakers and industry leaders have called for moving more slowly on the technology.
Patriots DC calls Darnell Washington a ‘big challenge’
The New England Patriots have plenty to prepare for as they get set to face the Pittsburgh Steelers, and tight end Darnell Washington presents a particularly difficult matchup. Patriots defensive coordinator Zak Kuhr singled out Washington as a “big challenge,” pointing to the fourth-year tight end’s rare combination of size, strength and athleticism. Washington has […]
UC temporarily blocked from enforcing transgender name and pronoun rules
In a conservative win, campus members of an education advocacy organization may refer to transgender people using names and pronouns that are not consistent with that individual's gender identity, according
A20 Pro’s Packaging Shift And New Vapor Chamber Unlocks Peak Performance; Liquid Nitrogen Cooling Brings Less Than 3% Increase Thanks To These Optimizations
Discover how the A20 Pro chip packaging shift and custom vapor chamber unlock massive peak performance upgrades, making liquid nitrogen cooling practically obsolete with under 3% gains
Trump vows to create ‘AI Force’ and appoint czar amid calls to regulate technology’s development
President Donald Trump said Saturday he plans to create an “AI Force” and name an AI czar as the government faces growing calls to impose guardrails on the rapid development of artificial intelligence.
Insomniac Says Marvel's Wolverine Uses No Generative AI After Fans Spot Strange Signs in-Game
Insomniac Games has stepped in to confirm Marvel's Wolverine contains no generative AI after a few bizarre in-game signs raised eyebrows on social media.
🚨 Arsenal thrashed at Brighton!
One of the worst defeats of the Mikel Arteta era took place this Saturday.Arsenal were torn apart by Brighton (Premier League Matchday 5). Final score: 3-0 to the Seagulls against an unrecognizable Gu...
Olympic Council of Asia President wants to keep politics out of Asian Games
The buildup to the Aichi-Nagoya Games has been overshadowed by complaints from national team delegations over organizational issues.
New releases from Blancpain, Czapek, Grand Seiko and more
This past week has been one for the ages. Rolex announces an annual calendar carrying an official nickname for the first time, Blancpain releases one of the smallest mechanical movements to date, and Grand Seiko brings back Arabic numerals after 25 years. There’s plenty more too, spanning other all sort of styles and budgets with … Continued
Exclusive | Get on the bus: New mobile medical clinic aims to keep NYC cops healthy and prevent sudden deaths
Kennedy tells antivaccine activists they have a friend in White House
Health and Human Services Secretary Robert F. Kennedy Jr. tells antivaccine activists from an organization he once chaired that they have a friend in the White House.
Seahawks Zach Charbonnet Gets Encouraging Health Update
Amid a small but noticeable collection of injuries not making much headway yet, we are getting some progress from one injured Seattle Seahawk.
The Big Holes in Wearable Heart Rate Variability And Readiness Scores
On September 9th, Apple announced it was revamping its Apple Watch Health Sensing System, rolling out a Readiness score (0 to 10), and increasing the frequency of heart rate variability (HRV) outputs 24-fold. This can be viewed as upping its competition with various other consumer wearable sensors. These “readiness scores” as a composite of multiple metrics, with heart rate variability (HRV) being front and center for most. The majority of Americans are now using wearable sensors, which equates to well over 100 million adults. HRV and Readiness scores are increasingly being marketed as a measurement of autonomic nervous system health, a digital marker for future disease, a clock for biological age, and a holistic metric to promote healthspan and even longevity. (Apple also introduced a new longevity tab and “Health Age”.) None of this has been proven. In this edition of Ground Truths I am going to review what we know about heart rate variability and readiness scores. Heart Rate Variability HRV is the variation in normal heart cycle timing. The variability of the heart rate, the barely perceptible millisecond changes in time between consecutive heart beats (see R-R intervals in the Figure below, left panel), is due to interplay between the sympathetic and parasympathetic (vagal nerve) inputs. Distinct from heart rate, individuals with the same heart rate can have very different HRVs. It is a rough reflection of the autonomic nervous system (ANS) activity, inadequate to say whether a person’s ANS function is abnormal. For more than three decades, heart rate variability (HRV) has been measured and several studies have found an association of low HRV and clinical outcomes, particularly a link with higher all-cause and cardiovascular mortality. There have also been less well established links of low HRV to risk of early cognitive impairment, dementia, mental illness, Type 2 diabetes and substance abuse. An important reminder is that HRV is a surrogate marker without any established cause-and-effect relationship. If you increase your HRV, that doesn’t mean it will improve health outcomes. In fact, there is no hard evidence for that. All that work linking to health outcomes was done with electrocardiogram (ECG) derived HRV. Now, in the era of consumer wearables, this is getting assessed differently, by optical pulse (yes, the lights you see) plethysmography (PPG) or what is called pulse rate variability (PRV). They are not the same, as shown below (right panel) and only concordant when the delay between the ECG and pulse is kept constant, which basically means at rest. I should mention there’s also what I will call MPV, a mattress mechanical movement sensor, a derived heart rate variability, that companies like Eight Sleep use, even further away from directly measuring HRV. HRV has not one uniform measurement but many different types of quantification, such as RMSSD, the magnitude of difference between successive R-R intervals of normal sinus beats (N-N) or SDNN, the standard deviation of NN intervals, both in milliseconds. SDNN is one of the so-called frequency domain HRVs (others are LF, HF, LF/HF). Different wearable sensors use different metics; Apple has relied on SDNN and nearly all of the others use RMSSD, which is generally considered the more accurate metric. There’s also the different length of time measured, such as for a matter of minutes, all day, or an overnight’s sleep. Short measurements are especially problematic since they don’t capture enough of respiratory modulation and other factors that influence HRV. Share Ground Truths How well does HRV correlate with PRV? There are very limited studies, especially independently done. One that is commonly cited was conducted by Air Force researchers in only 13 healthy adults assessing Oura ring 3 and 4, Whoop 4.0, and Garmin Fenix 6 and showed a correlation coefficient of 0.88 to 0.97 and a mean absolute percentage error from 6 to 10%. The correlation is not a perfect 1.0, but there’s at least a fairly high level of correlation. HRV is supposed to increase during the night due to takeover of the parasympathetic nervous system, and higher during deep sleep. A recent example of my 1 week, all day “HRV,” and one during sleep is shown below. As you can see, the N of 1 data are inconsistent for the same days from different sensors (Oura, AppleWatch, Fitbit Air, and Eight Sleep) by patterns, absolute numbers, and comparison with prior days and weeks. The largest study in over 8 million Fitbit users (the old version, not Google Fitbit Air, introduced in May 2026) gives you a sense of the effect of age, sex, and the 2 different main HRV (here PRV) metrics, with RMSSD on the left and SDRR (=SDNN) on the right below. That study, from data collected in 2018, is a major outlier, since all the more recent ones are tiny with respect to sample size. Many of the companies have not had independent evaluation of their HRV, such as Eight Sleep, but have published a low standard error on their website. There are some other published studies on the correlation between HRV and PRV, but they are all small and only in healthy adults. A scoping review emphasized the lack of study in underrepresented individuals, including the aged, people of color (which affects the PPG signal), and individuals who are underweight or obese. Add the typical adult age 60 plus with one or more chronic diseases. For example, one study in over 900 adults found poor correlation of HRV and PRV, non-uniformly underestimated across many chronic diseases (cardiovascular, endocrine, neurological, respiratory, and others), concluding PRV is “an invalid surrogate for HRV.” A recent systematic review of 43 studies comparing HRV and PRV found reasonable pooled absolute standardized error (HRV as gold standard) but only 10 of the studies provided quantitative synthesis in ideal conditions. Their main conclusion was similarly cautious: “PPG-derived HRV [PRV] should not be regarded as universally interchangeable with ECG-derived HRV across all devices, populations, and recording contexts.” Factors Affecting HRV and PRV That gets me to the long list of factors that affect HRV (and PRV) besides the device, the type of measurement (RMSSD, SDNN or others), the person’s signal, the sensor site, the duration of data capture, if weighting by sleep stage is used, how artifact is processed and corrected. And this list is not complete!: Oura puts out data from their community of users (who input data) on what affects their overnight HRV. The factors currently provided are: no alcohol (increase 8%), melatonin (increase 2%, float tank (increase 2%), wine (decrease 4%), and party (decrease 14%) in overnight HRV. Must be some big parties! Subscribe What is a PRV measurement good for? It has been falsely characterized as an index of “autonomic balance” and a specific indicator of stress. A 2018 review of the studies available for HRV and its relationship to stress, not using any of the current wearables, found that stress can lower HRV. But so can many other factors. The non-specificity of the signal, indexed to the table above, is striking. Evidence from a UK Biobank study of over 46,000 participants with actual HRV looked at genetically predicted HRV, a genetic risk score, that failed to show the expected HRV-mortality link, indicating that _HRV is likely not causa_l, but rather a reflection of person’s physiologic state. A review of consumer wearable HRV data from 5 longitudinal studies showed that nighttime PRV was not associated with perceived stress, and surprisingly higher HRV, in the largest cohort (N=717 participants), was correlated with higher stress. An Oura ring cohort of 525 first-year college students found a link between overnight PRV and perceived stress, but that was also seen with resting heart rate, sleep, and respiratory rate. Several very small studies have examined the relationship of HRV and athletic injuries or guiding training with mixed, and predominantly negative results. HRV biofeedback training with paced breathing had no significant effect on reducing stress or raising HRV, as demonstrated with sham controlled trials. When HRV for multiple days showed a decline in conjunction with body temperature, the Oura ring published data for prediction of Covid. The WHOOP company sponsored an observational study, published in 2026, of 30,000 users for 72 weeks, without a control group, that reported reduced alcohol intake (5.8 % points) by self-report. That doesn’t tell us much, and particularly about the merits of HRV for behavioral change. If you use the same device and conditions as longitudinal trends for multiple (at least 2-3) weeks that may be the one way to get something useful from the measurements. Data for overnight sleep with minimal motion and using RMSSD is the best proxy for real HRV. The reason to look at trends rather than any given night is that it more likely represents something, even though you won’t know with certainty what the “it” is. Keep in mind there are no data, no peer-reviewed evidence, to show that HRV fluctuation in-person has any correlation with health outcomes. Share Readiness Scores These are proprietary scores that integrate different metrics for each of the wearables: no algorithms have been disclosed. They are unvalidated against health outcomes. In a review of 14 composite health scores of readiness and recovery, HRV contributed 86% to the scores, followed by reading heart rate (79%), physical activity and sleep duration (both at 71%). That review noted the substantial variability in measurement protools and lack of standardization. Sleep staging is notoriously inconsistent and inaccurate by these sensors, which adds further to the HRV uncertainties for what the scores, which use sleep stage data, mean. Only resting heart rate has been shown consistently across devices to be extremely accurate. I’ve made a Table to summarize what we know about which metrics are included, the scores, any peer-reviewed studies that compared the readiness score with health outcomes, and the corresponding (if any, NA-not available) citation. You will note that some companies do not use the term “readiness," such as WHOOP for recovery, and Garmin, which has 2 different scores, one of which is Body Battery. Eight Sleep uses the term “Fitness Score.” They all include HRV; Apple includes a new metric they call “Recovery HRV” which among other components uses 7-days of sleep, but it is unclear what this means or how it is differentiated from other scores (there are clearly no data for outcomes). We have no knowledge of how the different components are weighted or whether any of these scores are better than resting heart rate, HRV alone, physical activity, or any other single metric. Since none of these are standardized, they are not interchangeable, so if you get a 90 for Oura that has no relationship to a 90 on a Google Fitbit Air. Notably, the company can update its algorithm for readiness score at any point without notification to device users. Without any useful evidence of actionability for these scores or established relationship with health outcomes, it is hard to make a case for their value. At the Apple recent announcement they showed their Readiness score (0-10) on the watch (Figure below) but there are no published data on this score, not even on their website. It’s available only on their new Watch Series 12 or Ultra 4 [of course, ;-)]. That exemplifies the problems with these scores, lack of data and evidence for being meaningful to promote health. Perhaps the best study (which isn’t saying much) is the WHOOP Recovery for golfer performance, because it did correlate with an objective outcome, even though there was no control group and the authors were all from the company. Among the 389 pro golfers, an absolute 10-per cent point increase in Recovery score was associated with about 0.5 fewer strokes per round. But that’s hardly a health outcome! WHOOP is also conducting a study in over 2,700 runners to see if their recovery score will be linked to less injuries and improved performance, but that is not yet published and has no control group or randomization. Putting This in Context For two decades I’ve been enthusiastic about the potential for digital health and particularly wearable biosensors. Over the years, we’ve seen some great progress for their ability to promote physical activity and accurately detect atrial fibrillation (the first FDA cleared deep learning AI for consumers). That work was the subject of rigorous research. But there are holes in the data and evidence for other metrics. One notable one is the “VO2 max” story that I wrote about earlier this year. At that time many subscribers asked me to cover heart rate variability, which I finally got to here. When I dived into the research and publication for HRV and readiness scores, I expected to find at least some that were of high quality and demonstrated their utility by linkage to health outcomes. To my surprise, I found none. The wearable sensor measurements for HRV (PRV) are, for the most part, accurate, but that validation work has only been done in small studies of healthy adults and does not take into account the long list of factors, from the device, software side, and the user side, that affect HRV measurements. Moreover, this metric chiefly relies on optical sensing and, as we have learned for heart rate PPG sensing, may be less accurate in people of color. Keep in mind that all of the health outcome association evidence comes from ECG-derived HRV; none are from wearable sensor data. I will repeat the key point: there's no peer-reviewed evidence to show that in-person HRV fluctuation—or efforts to raise your HRV— has any correlation with health outcomes. For those of you who look at your HRV on awakening, or even 2+ week trends of it being low, I hope this context helps to relieve any anxiety. Yes, low HRV (not PRV) has been shown to increase risk of some diseases as summarized above. But efforts to raise your HRV—a surrogate metric— has not been established for improving any health outcomes. HRV does not have any evidence of causality (the genetic evidence actually goes against this possibility). In this summary, I have not included data for other wearable sensors such as Polar, Samsung, Withings, Suunto, Amazfit, Coros, Ultrahuman, or additional mattress sensors. These are beyond my first-hand experience, and as far as I know from my in-depth review none have any peer-reviewed published data that differ from the 6 sensors I’ve reviewed here. From the points I’ve gone over above, we’re not ready for readiness scores. Besides being proprietary, they are predominantly based on metrics that have their own issues. It’s compounding the problem, like building a house without a solid foundation that has never undergone a rigorous inspection, and then selling it. Like I mentioned for PRV, you can look at trends over weeks rather than any single day, to get a handle, but even that may not be helpful. There’s simply no evidence that these scores meaningfully relate to health outcomes. I’d emphasize they might, but that requires doing prospective or randomized studies to prove it. None exist. There’s great promise for HRV/PRV utility_. For example**,**_ Prof Maiken Nedergaard, who discovered the brain glymphatics that are essential in eliminating metabolic waste products from the brain during sleep, has posited that HRV could be a non-invasive marker for neuromodulator oscillations, brain-body regulatory circuits, and brain clearance. That would be extremely useful, but like everything else on HRV and readiness scores it requires solid research and validation. The lay media isn’t helping much to get the story straight. Earlier this year The Economist published a piece entitled “The most useful indicator of your overall health” which ordained HRV as an “accumulated stress score.” That’s akin to the false assertion about VO2max: “V02 max is the singular most powerful marker for longevity.” As I’ve summarized here, that is not established. The fact is that so many things can lower HRV, including physical exercise (especially an intense workout), reduced sleep quality, stress, the list above, no less the device, signal, and software. Whatever fluctuations observed have not been correlated with any health outcome. Sadly, “datamaxxers” are widely using HRV and readiness scores that have never been validated to mean anything. We already know that for some people using the sensors for sleep metrics, it can induce “orthosomnia,” an obsession to get high sleep quality, with associated high levels of anxiety. In an experiment done by a company to promote sleep quality for its employees, “For those employees who did use the trackers, many reported feeling perfectly rested until their tracker told them they had had a terrible night. Others were told that they had slept like a baby when they had actually been lying awake worrying about the quality of their sleep. “ The same problem can result from preoccupation with HRV or readiness scores, with anxiety that would lead to further reduction in both. It you are using a wearable like >100 million American adults, it’s OK to look at these data, but contextualized with the major caveats reviewed here. If you are one to require evidence that HRV or readiness scores are linked to health outcomes, you may not even want to look. The companies make it hard to turn them off! Let me end with the companies that make and sell wearables. Apple’s doubling down on HRV (24-fold more reporting and heart rate very 5 seconds) and introduction of a Readiness score tells us that consumers have bought into these metrics and they are joining the club. However, all of this is occurring with a backdrop of tens millions of users, claims about the data that are not backed up by adequate evidence, marketing way out in front of whatever limited data exists, and not being transparent about their readiness score algorithms. The companies can well afford to do the research that is needed to connect these metrics with health outcomes show, once and for all, that increasing HRV or using readiness scores promotes our health. If they believed and invested in the products they are selling, we’d not be in this position of not knowing. That’s essentially where we are with HRV and readiness scores. Perhaps someday this will change and we’ll have good reason to embrace them. NB: I wrote this post. No AI. I have no conflicts of interest with any of its content. Loading... Ground Truths has 215,000 subscribers from every US state and 214 countries. 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I asked if Warcraft 3, WoW: Forever, and Heroes of the Storm will come to Xbox — they all said the same thing ...
The same old answer ... a tale as old as time. Will Warcraft and other Blizzard PC titles come to Xbox, PlayStation, or Nintendo Switch? Blizzard isn't saying "no" ... but it's not exactly saying yes.