Here is an introduction to the exercise of the elderly in the United States. Every day, 59% adults in the United States take part in various physical exercises. After Frank Short, an American old man, won the Olympic marathon in 1972, the "running craze" swept across the United States, and about 35 million people took part in running. There are many health centers and gyms in America, and many old people go there to exercise.

There are many forms of exercise. (1) Let's go and jog. Old people walk or jog on the runway of health care center. Walk fast every minute 100- 130, and exercise for more than half an hour. Jogging can be long or short, not less than a quarter of an hour. (2) unarmed exercise. Some elderly people do unarmed exercise after brisk walking or jogging. Mainly do two arms around the circle, chest expansion, bending, sit-ups and other actions; Some old and infirm people sit in chairs and do unarmed exercises. (3) Walk backwards. Many people practice walking backwards, which is said to improve blood circulation and prevent backache. (4) crawling. Some old people are crawling on the ground with gloves on. It is said that regular exercise can reduce coronary heart disease, cerebrovascular sclerosis, lumbar muscle strain, varicose veins of lower limbs and other diseases. (5) swimming. There are water clubs in America. Some old people like to swim in the indoor heated swimming pool there. There are also some old people who take a sauna there, which is both exercise and active rest.