It is not advisable to squat and rest. If you squat down and rest immediately after fitness exercise, it will make the blood of lower limbs return, affect blood circulation, deepen physical fatigue, and even cause gravity shock or sudden death in severe cases. Therefore, after each exercise, we should adjust the breathing rhythm, swing our arms during walking, and promote the blood of limbs to return to the heart, so as to pay off the "oxygen debt", speed up physical recovery and eliminate physical fatigue. This is the most basic common sense.

A sudden drop in body temperature is not desirable. Don't use cold water to cool down, it will make the skin tight, stop sweating, lead to physiological dysfunction such as body temperature regulation, and decrease immune function, which will lead to colds, diarrhea, asthma, wind-cold pain and so on. It could be worse.

It is not advisable to indulge in cold drinks. Exercise often makes people sweat. With the consumption of a lot of water, people always feel thirsty after exercise and need to drink water urgently. But at this time, the digestive system of human body is still in a state of inhibition and its function is low. If you try to quench your thirst for a while and eat a lot of cold drinks for a while, it is easy to cause gastrointestinal cramps, abdominal pain, vomiting and induce gastrointestinal diseases.

Not suitable for immediate consumption. During exercise, especially during strenuous exercise, the central nervous system that manages muscle activity is in a state of high excitement. Under its influence, the parasympathetic nervous system, which manages the activities of internal organs, has strengthened its inhibitory effect on the activities of digestive system. It takes 20-40 minutes to recover after the exercise. If you eat in a hurry, it will increase the physiological burden of digestive organs, cause dysfunction, and even cause many diseases in severe cases.

It is not advisable to take a hot bath immediately. It is dangerous to take a hot bath immediately after fitness exercise. Because a large amount of blood in the body is distributed on the limbs and body surface during exercise, once the exercise stops, the increased blood flow will continue for some time. If you take a hot bath at this time, it will increase the blood flow to the skin, causing too much blood to enter the muscles and skin, resulting in insufficient blood supply to the two main organs of the human body-the heart and the brain.

It is not appropriate to "omit" relaxing and tidying up activities. Practice shows that relaxation and finishing activities can not only make athletes' cerebral cortex excited, but also accelerate their heartbeat and breathing frequency, and through appropriate relaxation exercises, such as bare hands, walking, relaxing massage, breathing rhythm relaxation exercises, etc., athletes can return to the quiet state before exercise. Moreover, relaxation and finishing activities are helpful to restore muscle fatigue and reduce discomfort caused by acid swelling.