The sweet spot is 90 to 120 minutes a week
Cardio has hogged the longevity spotlight for decades. A Harvard-led study published June 12, 2026, in the British Journal of Sports Medicine makes the case for muscle. Researchers pooled three major cohorts — 147,374 adults who were middle-aged or older at the start, tracked for up to 30 years — and compared death rates against how much resistance training people reported doing.
People who logged 90 to 119 minutes of strength training a week were 13% less likely to die from any cause during the study than people who did none. The edge was larger for specific causes: a 19% lower risk of dying from cardiovascular disease, and a 27% lower risk of dying from neurological diseases such as dementia. Past roughly two hours a week, the extra benefit levelled off.
Weights plus cardio beats either one alone
Aerobic exercise still predicted longer life on its own — but the biggest effect came from combining both. Participants who regularly did resistance training and aerobic activity had up to a 45% lower risk of dying during the study period than those who did little aerobic activity and no strength training.
And none of this requires a gym. Resistance training in the study included weight lifting and body-weight movements, and Harvard Health's starter advice is deliberately low-tech: body-weight squats, push-ups and step-ups on a low stair, then resistance bands or light dumbbells as you progress — with consistency prized over intensity.
The Twikup Take
Most health advice has no finish line; this study draws one. About two half-hour sessions a week captures the bulk of the benefit, it costs nothing, and it stacks on top of the walking you already do. If your routine is cardio-only, a few squats in the living room may be the highest-value upgrade left.
Health note: This article is general information based on published research — it is not medical advice. Talk to your doctor or another qualified health professional before starting a new exercise program, changing your diet, or taking a supplement, especially if you live with a medical condition or take medication.
Photo: Scott Webb / Wikimedia Commons (CC0) — a woman strength training with dumbbells in a gym.