An analysis of three long-running U.S. cohort studies tracking nearly 150,000 nurses and health professionals for up to 30 years found that people who did 90 to 120 minutes of strength training a week had a 13 percent lower risk of death from any cause than those who did none, according to a report on the research from The Conversation. Benefits plateaued beyond about two hours of strength training weekly, and pairing it with at least 150 minutes of aerobic exercise a week was linked to a roughly 45 percent lower overall death risk.