The Floor Doesn't Know How Long You'll Live
The sitting-rising test went viral as a longevity oracle. It is a good test wearing a bad costume...
Longevity & Supplement Guides
Evidence-scored guides to supplements, biomarkers, and daily protocols. Written the way we score our products: honestly.
How REM sleep was discovered — and how it became a number on your wrist
In December 1951 a broke graduate student wired his sleeping eight-year-old son to a machine nobody else wanted,...
Take the Sets Off, Not the Week Off: What Deload Research Found
Every one of 246 competitive athletes surveyed takes an easy week. Two trials have now tested it —...
Can You Catch Up on Sleep? What Recovery Sleep Actually Repays
The weekend patch is the most widely practised sleep intervention in the world. The evidence says it gives...
Vitamin D and Belly Fat: The Headline Had the Arrow Backwards
A new analysis of 5,520 older English adults tied low vitamin D plus a large waist to a...
Six Flights a Day: What the Stair-Climbing Study Really Measured
A meta-analysis of 480,479 adults put stair climbing back in the headlines this month. Read the exposure column...
No, your gut bacteria are not eating you — but fibre decides what they make
A viral headline last week said that when you run low on fibre, your gut microbes start eating...
Does a Sense of Purpose Really Make You Live Longer?
The largest analysis yet — 488,765 people, 48,928 deaths, up to 32 years — puts higher purpose in...
Three Weeks Off: What You Lose, and What Waits
Two to four weeks of inactivity cost eight trained men 12% of their plasma volume, 12% of their...
How Fast You Walk When Nobody's Timing You
In 34,485 older adults, usual walking speed tracked survival about as well as a full panel of risk...
The Man in the Copper Box: Who Invented the Calorie
In 1896, a chemistry professor sealed a man inside a copper-lined chamber in a Connecticut basement to prove...
Cold Water After Training: What the Ice Actually Does
Cold-water immersion reliably reduces soreness for about a day, does nothing measurable to strength or power, and applies...
