https://www.cbass.com/faq16.html#April_1,_2022 A new study from Japan (published February 28, 2022) reports that as little as 30 minutes a week of resistance exercise can lower the risk of death. In other words, strengthening your muscles can help you live longer. This can be by lifting weights in a gym or heavy lifting around the house or outside. It, of course, has to be done regularly. Researchers led by Dr. Haruki Momma, Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, reported that muscle strengthening activities for 30 to 60 minutes a week reduced the risk of all-cause mortality by 10 to 20 percent. And when combined with aerobic exercise the drop in risk can double. Surprisingly, a higher volume of muscle-strengthening exercise produced a J-shaped association, casting doubt on the benefit of doing more strengthening activities. The researchers analyzed 16 studies in the last 10 years, done mostly in the USA, but also in the UK, Australia and Japan. The studies ranged from about 4,000 to almost 500,000 and included men and women ranging in age from 18 to 97. They all considered the effect of aerobic forms of exercise such as running and jumping as well as strength training. Momma and colleagues concluded: Muscle-strengthening activities were inversely associated with the risk of all-cause mortality and major non-communicable diseases including CVD, total cancer, diabetes and lung cancer; however, the influence of a higher volume of muscle-strengthening activities on all-cause mortality, CVD and total cancer is unclear when considering the observed J-shaped associations. The study was published in the British Journal of Sports Medicine, and can be accessed free of charge: https://bjsm.bmj.com/content/early/2022/01/19/bjsports-2021-105061
I think some gym guy told him to do three sets but he heard tree sets. Oh, and you gotta work the trunk...
Truth be told, I expected some volume and/or frequency enthusiasts to take umbrage at the notion of a J-shaped association between exercise and health risk reduction beyond 30-60 minutes a week. If accurate, that's a fairly startling conclusion against the background of conventional thinking and broscience.