Bathing after exercise has little effect on weight loss, because bathing is also a small amount of exercise and consumes calories.
According to the research of sports medicine experts, when people exercise, the blood flowing to muscles increases and the heart rate accelerates. When exercise stops, blood flow and heart rate will be relieved, but it will last for a long time. If you take a bath immediately, it will increase the blood flow to your skin and muscles. In this way, the remaining blood is not enough to supply other important organs, such as the heart and brain, which leads to heart disease. At the end of exercise, the human body is still in a state of vigorous metabolism, increased heat production and vasodilation of the skin. At this time, if the skin is immediately stimulated by cold water, the blood vessels of the skin will contract through nerve reflex, which will hinder perspiration and heat dissipation, but it will make heat dissipation difficult and body temperature rise. At the same time, the decrease of skin blood flow suddenly increases the blood flow back to the heart, which will increase the burden on the heart. There is also the body from the hot environment into the cold environment, too late to adapt to the adjustment, often easy to catch a cold or cause gastrointestinal cramps. Muscle fatigue and tension increase after exercise, and then cold stimulation may also cause cramps.
Therefore, it is recommended that you take a bath after 30 minutes of exercise, and it is recommended to take a warm bath.