Discover the Optimal Strength Training Duration for Enhanced Longevity: A Harvard Study

A groundbreaking study from the Harvard T.H. Chan School of Public Health, featured in the British Journal of Sports Medicine, has pinpointed the precise weekly strength training duration associated with the highest longevity benefits — and it’s possibly less than you anticipate.

The researchers meticulously analyzed nearly three decades of health data from 147,374 adults involved in three long-standing studies — the Health Professionals Follow-Up Study, the Nurses’ Health Study, and the Nurses’ Health Study II. They discovered a distinct “sweet spot”: individuals who engaged in 90 to 120 minutes of strength training per week had a 13% lower risk of mortality from any cause compared to those who did not participate at all.

The benefits were particularly notable for two of the most common causes of death today: a 19% lower risk of death from cardiovascular disease and an astounding 27% lower risk of mortality from neurological conditions — including Alzheimer’s and Parkinson’s disease. Importantly, exceeding two hours per week did not provide any additional longevity benefits.

The results were even more remarkable when strength training was combined with regular aerobic exercise. Participants who incorporated both experienced up to a 45% reduction in overall mortality risk. The authors of the study highlight that merely two 45-minute sessions — or three 30-minute sessions — per week could be sufficient to harness these life-prolonging benefits.

This study is regarded as one of the most comprehensive and actionable longevity findings published in recent times, providing a clear, scientifically-supported guide for anyone seeking to invest in their long-term health.

Source: ScienceDaily — Scientists find the strength training “sweet spot” for a longer life (August 8, 2026)