At the age of 20 , the body function is at its peak, and any exercise intensity can be exercised. The "conventional physical strength" obtained through muscle strengthening exercise will not disappear after the exercise is terminated. The heart can increase blood transfusion through endurance exercise. In short, 20 -year-olds can reserve “resources†for future health.
　　 Around the age of 30 , the body function of the human body has surpassed the peak. At this time, the joints of the body often make some noise, which is a precursor to joint disease. In order to maintain a high degree of flexibility in the joint, more stretching should be done. Also pay attention to the exercise of the cardiovascular system. Exercise should be performed once every three, one, three, and five times a week, each time for 5 to 30 minutes of cardiovascular exercise ( jogging or swimming ) , the intensity is not as great as when you were 20 years old.
Compared with 20 years old, the exerciseability of muscles of people over 40 years old has decreased by 25% , physical strength has gradually decreased, muscles have shrunk year by year, and the body begins to bless. Blessing is related to the reduction of total muscle mass, less muscle, less fat consumption, and less meal than younger, so the belly begins to bulge. People over the age of 40 should choose not only to maintain a good body shape, but also to prevent common senile diseases such as high blood pressure and cardiovascular disease. Exercises can be performed twice a week, five times, including: 25 to 30 minutes of cardiovascular exercise, moderate-intensity exercise, such as jogging, swimming, cycling and so on.
　　 People over the age of 50 can do 10 to 15 minutes of exercise every time they exercise. The weight of the device is lighter than that of 30 years old, but the number may be more. To prevent accidents, it is best not to use dumbbells. Pay particular attention to the joints of the movement and those muscles that are prone to atrophy. Â
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