Summer fitness should not be used to reduce the temperature quickly

1. It is not advisable to cool down quickly

After summer exercise, even if you are sweating profusely, it is not advisable to cool down quickly, such as entering an air-conditioned room, blowing fans, cold water bath, etc. This is because after exercise, the body's metabolism is still in a vigorous stage, the body temperature is high, the subcutaneous blood vessels are obviously dilated, and the blood flow is large, which is conducive to dissipating heat and excreting metabolites. At this time, the rapid cooling method will not only cause the human skin blood vessels to contract sharply, the pores suddenly close, and the blood circulation resistance will increase, which will increase the burden on the already tired heart and even damage it. At the same time, due to the pores Close, reduce heat dissipation, and accumulate heat in the body, which is very easy to cause heat stroke. In addition, rapid cooling also causes blood vessels in the muscles to contract and block blood circulation, causing metabolic products and required energy and substances in the muscles to be unable to be discharged and supplied in time, aggravate muscle fatigue and swelling and soreness. In addition, due to rapid cooling, the body temperature drops rapidly, reducing the body's disease resistance, and prone to colds and other diseases.

2. Do not eat cold drinks immediately

After physical exercise, a large amount of blood in the body remains in the muscles of the limbs. The gastrointestinal tract The blood vessels are in a contracted state, and the blood supply is temporarily reduced. If you eat frozen drinks and food immediately after exercise, the sudden and strong cold stimulation will make the gastrointestinal in the contracted and ischemic state more contracted and ischemia, which is very likely to cause local muscle spasms of the gastrointestinal region and cause abdominal pain, diarrhea and other diseases. At the same time, the sudden cold stimulation causes blood vessels to contract, and the blood flow in the throat and brain that are in a congested state will reduce, making it easy to cause dizziness, headache, hoarse throat. Therefore, do not eat a lot of cold drinks immediately after exercise.

3. Do not drink a lot of water

The summer is hot, and the body will sweat a lot after physical exercise. At this time, it is beneficial to the health of the human body. However, you must not drink a lot of water at one time, which is extremely harmful to the recovery and health of the body. Drinking a lot of water will inevitably cause excessive water to accumulate in the gastrointestinal tract, causing gastrointestinal bloating and discomfort. It not only increases the burden on the gastrointestinal tract and directly hinders the activity of the diaphragm and affects breathing, but also dilutes gastric juice, weakens the absorption capacity, and easily causes chronic gastroenteritis. At the same time, excessive water enters the human blood, which will increase the burden on the heart.