Cornerstone guide. Topics in this pillar cover the markers of biological age — VO2 max, muscle mass, glucose regulation, recovery quality — and the evidence-backed interventions that move them in the right direction.
Biological Age
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Chronological age is a clock; biological age is a status report. Two 45-year-olds can look identical on paper and yet have cardiovascular fitness, muscle mass, glucose regulation, and inflammatory markers that put one in their thirties and the other in their late fifties. That gap — sometimes called your "fitness age" or "pace of aging" — is the actual lever you have control over. The number on your driver's license is fixed; the rate at which your body is aging is not. This pillar walks through the measurable inputs that shape biological age: cardiorespiratory fitness (VO2 max is the single strongest predictor of all-cause mortality), muscle mass and strength, glucose control, sleep quality, stress regulation, and a handful of bloodwork markers. We translate each marker into what it actually predicts about healthspan and longevity, what range is healthy for your decade of life, and the specific interventions — most of them stunningly simple — that move it. Dorsi's health coach is built around the metrics that matter most for biological age, with resistance training as the first intervention because the evidence base for its effect on healthspan in your 40s, 50s, and beyond is overwhelming. The articles below give you the underlying science; Dorsi turns it into a weekly routine you'll actually do.
Understanding and lowering your biological age
A workout plan that keeps up with real life.
- Built around your goal — every session belongs to the same direction.
- Fits today's conditions — time, physical state, and equipment shape the work.
- Updates what comes next — training feedback keeps the plan moving with you.
See how Dorsi builds a personalized workout plan around your goals and current conditions.