What is the downside of red light therapy? For most healthy adults who use a…
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Can Sleep Slow Biological Ageing? A Proteomic Protocol Read
Here is the short answer. In a 2026 Aging Cell study of 93,249 UK Biobank adults, longer total sleep duration, more deep sleep and more REM sleep were each associated with lower risk of most of nine hallmarks of ageing, while more time awake after falling asleep and more irregular sleep schedules were associated with […]
Can Habit Stacking Add Years to Your Life? What the 60,000-Person Study Found
Can habit stacking really add years to your life? Here is the short answer. A University of Sydney study of nearly 60,000 UK Biobank adults found that people who combined small improvements in sleep, movement and diet were associated with up to 9.35 additional years of life and 9.45 additional years of healthspan, compared with […]
Can Activating AMPK Extend Your Lifespan? What the 3-Species Study Really Found
Can AMPK activation extend lifespan? In humans, no one has shown it. In three much simpler organisms, yes. A study published in Aging Cell on 29 September 2026 found that directly switching on AMPK, the cell’s energy sensor, extended lifespan in fission yeast, roundworms and fruit flies, with gains of more than 25 percent in […]
Beat the October Slump: A Morning Light Therapy Protocol Before the Clocks Change
Does light therapy work for winter depression? The most direct test of that question ever run compared it against an antidepressant, head to head, and found essentially no difference. Ninety-six patients with seasonal affective disorder were randomised to either 30 minutes of 10,000-lux morning light plus a placebo capsule, or dim placebo light plus 20 […]
Does Creatine Help Your Brain on a Sleepless Night? What 29 Sleep-Deprived Adults Showed
Does creatine help with sleep deprivation? That question sounds like the plot of a biohacker fairy tale: the gym powder that also rescues your mind on zero sleep. A 2026 trial from Germany’s Forschungszentrum Juelich tested exactly that idea, and the honest answer is more interesting than the hype. A single dose of creatine preserved […]
Does Grip Strength Predict Longevity? Two Strength Tests and How to Hit the Top Quartile
Does Grip Strength Predict Longevity? The Short Answer Yes. In a JAMA Network Open study published in February 2026, researchers followed 5,472 women aged 63 to 99 for a mean of 8.4 years. Women in the top quarter for grip strength had 33% lower all-cause mortality than women in the bottom quarter. Women with the […]
Does Intermittent Fasting Cause Muscle Loss? What a 12-Month Trial Found
Short answer Yes, it can, if you treat the eating window as the whole plan. In a 12-month follow-up of a randomised trial in 99 adults with overweight or obesity, people who did 12 weeks of 16:8 time-restricted eating kept off more weight than a usual-eating control group a year later. The catch was body […]
Which Wearable Is Most Accurate for HRV? What 536 Nights Against ECG Actually Found
If you only care about overnight HRV accuracy, the best validated answer right now is a finger-based ring. In the largest same-night, at-home comparison we have, Oura Ring Gen 4 tracked closest to an ECG reference over 536 nights, with a concordance correlation coefficient of 0.99 and a mean absolute percentage error of 5.96 percent. […]
Sauna or Cold Plunge: Which Is Better for Recovery and Longevity?
Sauna or Cold Plunge: Which Is Better for Recovery and Longevity? If you bought a chest freezer in 2023 just to sit in it, you were not alone. Cold plunging became the defining wellness ritual of the decade: ice baths in back gardens, plunge pools at boutique gyms, influencers filming their 6am shiver face. The […]
The 6.4 to 7.8 Hour Sleep Window: Dialling In Your Longevity Sweet Spot
If you track your sleep, you have probably asked yourself the optimiser’s question: what is the actual number? Not the NHS range of seven to nine hours, but the specific duration, for your body, that ages you slowest. A 2026 Columbia University study has put the tightest evidence-based answer yet on the table: across 23 […]