At present, there is no unified understanding whether various sports, including strength training, can make people live longer. But one thing is certain, scientific exercise and fitness can delay aging.
However, it should be noted that delaying aging does not mean longevity. For example, delaying aging can make your body state closer to that of your youth, make your heart and lungs stronger, make your body more flexible and make your appearance look younger, but these may not make you live longer.
Although from the understanding of ordinary people, a healthier body is of course conducive to longevity. But strictly speaking, exercise and fitness only reduce the risk of various diseases, and it is uncertain whether you can live longer.
There are too many factors affecting longevity, including exercise, diet, lifestyle, mood, environment, congenital constitution and so on. Exercise and fitness, or becoming a muscular man, is just one of the factors.
It can be said that as long as scientific fitness, including becoming a muscular man (a natural fitness state), there is at most a question of whether people can live long, but it will never make people short-lived.
Therefore, whether it is strength training or aerobic exercise, its real value lies in making people healthier and getting old healthily, rather than ensuring longevity.
Finally, answer this question: Is muscular man short-lived?
The "drug-addicted muscular man" is likely to induce some diseases and lead to premature death due to the injury of drugs. But for natural bodybuilders, as long as they exercise scientifically, they can keep their bodies healthy for a long time, which is conducive to delaying aging.
Arbitrarily saying that "muscular men are short-lived" is like arbitrarily saying that "people who don't exercise are short-lived" Obviously, there is no basis.