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Biomarker explainers, longevity research and product updates — in one feed.
Muscle is not just for movement — it is a metabolic reserve the body draws on in illness and age. From about your thirties it slowly shrinks, and how much you keep tracks with long-term health.
Sleep is not downtime — it is when the body and brain run essential maintenance. Across large studies, both too little and too much sleep track with worse long-term health.
How fast you walk at your natural, comfortable pace turns out to be one of the strongest simple predictors of healthy aging — measurable with nothing but a tape measure and a stopwatch.
Two of the easiest numbers to measure — how fast your heart beats at rest, and how much the interval between beats varies — quietly track cardiovascular health and aging.
One of the cheapest measurements in medicine — how hard you can squeeze — turns out to be a strikingly good predictor of long-term health. Here is why, and what moves it.
Of all the numbers you can track, few predict long-term health as strongly as VO2max. Here is what it measures, why fitness maps so tightly to lifespan, and how the number moves.
Two people born on the same day can be biologically years apart. Here is what biological age means, how researchers estimate it, and why it responds to how you live.
Articles in this section are educational and are not medical advice, a diagnosis, or a prescription. Consult a qualified professional before acting on anything you read here.