Health is an all-round "health preservation": always be optimistic, broad-minded, calm and emotionally stable; Plus proper diet and physical exercise. It is possible to delay aging and prolong life. Appropriate physical activities are very beneficial to human health, which can make people feel happy, strengthen their physique and thus increase their resistance. At present, the average life expectancy of human beings on earth is over 70 years old, and now the average age of women in China is 67.8 years old, while that of men is low. According to the report of the World Health Organization, the life span of human beings should be 100 to 175 years. Experts put forward the slogan "Never die of ignorance", calling on human beings to pay attention to health care, live a healthy life and develop a good lifestyle in their lifetime. If a person does not exercise for more than ten years-that is, long-term exercise, which is not accidental exercise-the average life expectancy will be reduced by about 5%, that is to say, he will live nearly five years less than normal people. If a person does not exercise for more than 20 years, he will probably live ten years less.