Anonymous9 days ago
A 30-year study of 147,374 adults published in the British Journal of Sports Medicine found that 90-120 minutes of weekly strength training was associated with a 13% lower risk of all-cause mortality, with the largest benefits seen when combined with aerobic exercise. But the study's reliance on self-reported data, its predominantly white and affluent participant pool, and the persistent challenge of healthy-user bias in observational exercise research raise questions about how much of the benefit is causal — and who actually stands to gain.