The main purpose of fitness is to grow muscles, pay attention to strength, exercise is the second purpose, and they are not interested in physical fitness. Soldiers pursue endurance in physical training. Running with load and push-ups are daily activities. In the real battlefield, willpower is the key to success. Soldiers will need to learn all kinds of combat skills, and modern weapons, including guns, require soldiers to use them skillfully. Soldiers have an advantage over bodybuilders. Fitness players can't beat soldiers, and all functions will be cracked by soldiers.