1. Your mental state will be better, and fitness will bring you a virtuous circle. If people are lazy and don't like sports, brain cells will be inactive and blood circulation in limbs will be poor. People who insist on fitness often have very good blood circulation and ideal brain cell activity, so their mental state is very good. 2. The change of muscle strength, I have to admit that people who often insist on fitness have stronger muscle ability and much stronger strength than other people who don't exercise, and they are also 55-year-old men. Compared with people who exercise, their aging rate will be slower. 3. Changes in sleep state. People who don't exercise for a long time will accumulate more body fat, while those who insist on fitness will have different body fat even if their weight is the same as that of people of the same height and age. People with more developed muscles will be in a better state, exercise during the day and secrete more melatonin at night, so the quality of sleep will be better. 4. Changes in resistance. If you carefully observe people who exercise for a long time, you will find that they seldom catch a cold in autumn and winter, and they are not so afraid of the cold. Why people are afraid of cold has a lot to do with their physique. Exercise can improve their physique, reduce colds and make the respiratory tract healthier.