1, because when the human body is exercising, the amount of exercise gradually increases due to the continuous contraction of muscles. In order to meet the needs of exercise, the heart rate and breathing will also be accelerated. Blood circulation will accelerate, and the blood flow to the muscles and the heart itself will also increase. When the exercise stops, the blood flow and heart rate will slow down, but it will last for a while before it will gradually stabilize and return to the state before exercise.
2. If you take a bath immediately at this time, after the body is stimulated by hot water, it will cause the blood vessels of muscles and skin to dilate, which will further increase the blood flow to muscles and skin, resulting in insufficient blood supply to other organs, especially the heart and brain. Blood supply to other vital organs is insufficient. At the same time, you can't breathe well after exercise, and then you go into the bathroom. In the absence of air circulation, the brain is prone to lack of oxygen. So take a hot bath immediately after exercise. Symptoms such as dizziness and general weakness often occur, and severe cases can also cause blood pressure drop, collapse shock and syncope.
Extended data
The harm of taking a bath immediately after sweating.
1, it is easy to have insufficient blood supply or collapse by taking a bath immediately after sweating.
Just after exercise, the blood in the body is in a state of high-speed circulation. If you take a hot bath immediately after exercise, it will increase the blood flow of the skin, which is not conducive to the blood supply of organs such as the heart and brain, and it will easily lead to insufficient blood supply to the heart and brain. Especially when the water temperature is high, it will also lead to increased sweating, induce water loss in the body, and easily cause human collapse.
2. It is easy to catch cold by taking a bath immediately after sweating.
After exercise, the body will open the pores of the skin to meet the needs of heat dissipation. Therefore, taking a bath immediately after the pores are opened is very easy to get cold and cold, which leads to a series of problems such as colds, colds and headaches. Moreover, even if you don't take a cold bath, taking a hot bath immediately after exercise is just as easy to catch a cold.
References:
Health News Network: A 24-year-old boy took a bath after excessive exercise, which led to sudden death of myocardial infarction.