Readiness scores: the most confident number on your wrist
Nearly every wearable now grades your recovery before breakfast. The inputs have decades of research behind them; the...
Longevity & Supplement Guides
Evidence-scored guides to supplements, biomarkers, and daily protocols. Written the way we score our products: honestly.
Showing 19 guides tagged “Recovery”.
You can’t feel your heart rate. You remember it.
Set an implanted pacemaker to 61 beats a minute and people count 52. Set it to 109 and...
Contrast Therapy Feels Better. New Data Shows What It Costs.
A 2026 crossover trial put the same people through the same sauna twice, changing only the cooling break....
A Longer Exhale Calms You Down. It Also Changed What People Chose.
A new Neuron study had 41 people breathe two seconds in, eight seconds out inside an MRI scanner....
Is Soreness a Good Sign? What Aching Muscles Actually Measure
Soreness has a published timecourse, and it is not the one people think. It peaks on day one,...
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...
Should Your HRV Decide Today's Workout?
Six trials say letting a morning number pick your training day beats a fixed plan — modestly. A...
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 —...
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...
The Invention of Normal: Where 37 °C Came From
In 1868 a Leipzig physician turned about a million armpit readings into 37.0 °C. He also published a...
Bedroom Air Quality and Sleep: The Free Variable Nobody Measures
We measure the sleeper in exquisite detail and ignore the sealed room they spend eight hours in. What...
Muscle Adapts Fast. Tendon Doesn't.
Radiocarbon dating says the core of your Achilles was built before you turned eighteen and has barely been...
