The everlasting staircase: how the treadmill learned to measure you
In 1818 an engineer built a machine to prove that a prisoner had worked. Forty years later a...
Longevity & Supplement Guides
Evidence-scored guides to supplements, biomarkers, and daily protocols. Written the way we score our products: honestly.
Eccentric training: the half of the rep most people throw away
A muscle is strongest while lengthening, and cheapest to run there. Here is what the eccentric-training evidence actually...
What the Finnish sauna studies actually measured
The famous sauna number compares frequent bathers to weekly bathers in a country where nobody abstains. Four randomised...
Vitamin C and the common cold: the ski camp that convinced a Nobel laureate
Headlines said it again this week: vitamin C does not stop you catching a cold. The odd part...
How fast you eat is a portion size
A 2026 crossover trial held two ultra-processed diets identical and changed only their texture. People ate 369 fewer...
Three minutes of sprinting moved a quarter of the blood proteins. Then came hour three.
A new Cell Reports Medicine study found sprint intervals produce a far louder molecular signal than 90 minutes...
6.4 to 7.8 Hours: The Sleep Window That Isn’t a Target
A Nature study built 23 biological ageing clocks and found a U-shaped link with sleep duration. The headline...
Astaxanthin and Hyaluronic Acid: Two Very Different Absorption Problems
One is a fat that will not dissolve in water. The other is a polymer too large to...
Liposomal Vitamin C: What the Trials Actually Show
Ten human trials, nine of them positive on blood levels — and two that went looking for a...
Why Quercetin Barely Absorbs — and What Actually Changes That
Unformulated quercetin absorbs at under one percent. The sugar it arrives attached to moves that roughly twenty-fold —...
How a Liposome Actually Crosses Your Gut Wall
The label promises a protective shell. Your digestion has other plans — and the real mechanism is the...
Should Your HRV Decide Today's Workout?
Six trials say letting a morning number pick your training day beats a fixed plan — modestly. A...
