The reason why people can't take a bath immediately after exercise is mainly because muscles are constantly contracting and the amount of exercise is increasing. At this time, the heart rate will be accelerated, the blood circulation will be accelerated, and a large amount of blood will flow to the muscles. When exercise stops, the blood circulation will slow down and the heart rate will slow down. At this time, if you take a bath immediately, because of the stimulation of hot water, muscle blood vessels will expand, and the blood supply to organs will decrease at this time. At this time, the blood supply to the brain will be insufficient. At the same time, because I just finished exercising, my breathing is not completely stable. At this time, taking a bath will lead to hypoxia in my brain because the air in the environment is not circulating. When taking a bath, people are prone to dizziness, general weakness or dizziness, and also prone to sudden situations, such as syncope, collapse or shock. This time is more dangerous, especially for middle-aged and elderly people. Special attention should be paid to not taking a bath after exercise, and the bath water should not be too hot for too long. Proper water temperature can better relieve fatigue, and taking a bath immediately is also easy to catch a cold.