“Will "macho" lifespan be shorter?

　　There are many benefits to being a "macho man". Research shows that the more muscular a man is, the more sexual partners he will have throughout his life and that his sexual experiences will begin earlier. However, maintaining muscle is often quite expensive. Due to fierce competition, only the most muscular men can win the beauty. Therefore, men invest a lot of resources almost regardless of the consequences in the hope of enhancing their sexual attractiveness.

　　According to a study conducted by the National Institutes of Health and Nutrition Examination, maintaining male Muscles are not only expensive, but also require healthy for the price. The agency surveyed 12,000 American men and women over six years and found that men need 50 percent more calories than women, even after adjusting for different activity levels. Research also shows that men's muscle mass is the most important measure of their calorie intake, more important than their occupation and height and body mass index (BMI).

　　Men are more muscular female It developed because men needed to fight and hunt. From an evolutionary perspective, a muscular "macho" not only means that he has better physical fitness and strength, but also means that he can support his wife and protect his home, and is a good backer. This ancient aesthetic has been used to this day, so female They are also more attracted to muscular men. This phenomenon of competing with members of the same sex and showing off to members of the opposite sex is an evolutionary form of "sexual selection." It is the same form of evolution that creates antlers and peacock tails, and it is the same form of evolution that creates the muscles of men.

　　Plus, there’s another price to pay for extra muscle. Because men spend too much nutrition to maintain strong muscles, their immunity is far inferior to that of women. Therefore, a macho man with more muscles and higher density will have lower immunity and may have a shorter lifespan.

　　Since ancient times, muscular men have had better chances of courting in the short term, but thin men are not necessarily losers in the final courtship competition. Although thin men may have sexual experience later, because they live longer than macho men, they often adopt a "longevity" strategy so that the number of sexual partners they get in their lifetime can match or even exceed that of macho men.