It is not suitable for fitness after eleven o'clock. The best time to exercise in the evening is from 2 hours after dinner to bedtime. Relevant experts suggest that at dusk: 17: 00 ~ 19: 00, especially when the sun goes down, the human body's exercise ability reaches its peak, the senses such as vision and hearing are more sensitive, and the heart rate and blood pressure also rise, which is the best time for evening exercise. Exercise at night can improve people's physique. Hormone activity in the body is also in good condition between 4 pm and 7 pm, and the body's adaptability and nerve sensitivity are also the best. Therefore, experts advocate evening exercise, but in the evening time, we should pay attention to the intensity of exercise, otherwise too high intensity will excite sympathetic nerves and hinder sleep.