The Vitruvian Protocol

System III of XI

Muscular

Muscles & tendons

Why it matters

Muscle does more than move you. It is the body's largest site for glucose disposal, a reserve of protein for illness, and the main thing between an older adult and a fall. Strength declines by roughly 1–2% a year after midlife unless it is trained.

The protocol

Protocol 1

Strength-train every major muscle group at least twice a week

Grade A · Strong evidence
How to do it
  • Do 2–3 sessions a week. Cover legs, hips, back, chest, shoulders, arms and core, for example with squats, hinges, presses, rows and carries.
  • Do 1–3 sets of 6–15 reps per exercise. End each set with only 1–3 reps left in reserve.
  • Progress: when the top of the rep range feels easy, add weight or reps.
  • About 30–60 minutes a week captures most of the observed longevity benefit, so you don't need hours.
  • To build muscle, eat about 1.6 g of protein per kg of body weight per day, spread across meals.
Why it works
Mechanical tension turns on muscle protein synthesis. More, stronger muscle increases insulin-independent glucose uptake, resting metabolism and functional reserve.
The evidence
The WHO recommends muscle-strengthening activity on 2 or more days a week for all adults1. A meta-analysis of prospective cohorts found that muscle-strengthening activity was linked to 10–17% lower all-cause mortality, cardiovascular disease, cancer and diabetes, with the largest benefit at about 30–60 minutes a week2. A meta-analysis of 49 trials found protein supplementation boosts gains in strength and lean mass, with benefits plateauing around 1.6 g/kg/day3.

What to measure

  • Grip strengthTrack yearlyOne of the strongest single predictors of mortality and disability. Compare against age norms.
  • 30-second chair standHold or riseCount full stands with arms crossed. Falling counts flag fall risk.
  • Training logProgressingRising load or reps over months is the real measure of a working program.

Avoid

  • Long unbroken stretches of sitting. Break them every 30–60 minutes.
  • Crash diets without protein and resistance training. Much of the weight lost comes from muscle.
  • Anabolic steroids and unprescribed testosterone. They carry cardiovascular, liver and fertility harms.

Sources

  1. Bull FC, Al-Ansari SS, Biddle S, et al. World Health Organization 2020 guidelines on physical activity and sedentary behaviour. Br J Sports Med. 2020;54(24):1451–1462. doi.org/10.1136/bjsports-2020-102955
  2. Momma H, Kawakami R, Honda T, Sawada SS. Muscle-strengthening activities are associated with lower risk and mortality in major non-communicable diseases: a systematic review and meta-analysis of cohort studies. Br J Sports Med. 2022;56(13):755–763. doi.org/10.1136/bjsports-2021-105061
  3. Morton RW, Murphy KT, McKellar SR, et al. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. Br J Sports Med. 2018;52(6):376–384. doi.org/10.1136/bjsports-2017-097608

Educational content, not medical advice. These protocols summarize published evidence for healthy adults; they are not a substitute for care from a clinician who knows your history. Check with one before starting a new exercise program, changing medication, or if you are pregnant or managing a medical condition.