1, exercise after drinking is the most taboo: wine is quickly absorbed by the intestinal wall about two hours after entering the body, all of which enter the blood, a small amount is excreted through urine and sweat, and most of them are detoxified by the liver. Because the cerebral cortex is extremely sensitive to alcohol. After drinking, the cerebral cortex is excited and agitated for a short time. After a long period of inhibition, there will be a feeling of being slow and sleepy. At this time, the brain function is in an unstable state and the body's control ability is reduced. If you exercise the cerebral cortex in this situation and make great efforts, it will damage the brain function. And alcohol can promote muscle fatigue. Muscle needs a lot of blood and oxygen supply when working, and it often leads to fatigue because of insufficient oxygen supply and increased lactic acid produced by muscle. In addition, alcohol will accelerate the production and accumulation of lactic acid in muscle, slow down the elimination of lactic acid, which is not conducive to the recovery of the body and affects muscle growth. It can be seen that drinking alcohol before or after fitness is a taboo.

2, a cold is to stop exercising: I used to hear some rumors: it doesn't matter if I have a cold, go to the gym to exercise. Actually, this statement is misleading. Some people think that after taking part in fitness exercises and sweating, the symptoms of colds will be alleviated. This is because during exercise, the sympathetic nerve is excited, the heartbeat is accelerated, the breathing is accelerated, the function of the defense system composed of antibodies such as white blood cells in the body is improved, and the toxins in the body are discharged faster when sweating, so that the symptoms of colds are alleviated. This happens only in young people with mild symptoms or strong immunity at the beginning of a cold. For most people, taking part in fitness exercises when you have a cold does more harm than good.

3, taboo fitness exercise within one hour after a meal: going to the gym immediately after a meal is easy to cause indigestion. For a period of time after eating, the food in the gastrointestinal tract fills the top of the diaphragm, which affects the movement of breathing. And after eating, the blood is concentrated in the digestive system. If you exercise at this time, the blood will be scattered to the sports organs for muscle work, which will affect the digestion and absorption of things. In addition, exercise organs are prone to dizziness, pallor, vomiting and other symptoms due to insufficient blood supply.

4, taboo fasting exercise: fasting blood sugar is low. Low blood sugar, lack of oxygen in the brain and distraction will lead to dizziness and limb weakness. In severe cases, it is difficult to complete the fitness plan because of shock and other discomfort. If the body does not store carbohydrates (sugar) to provide fuel for exercise, it will consume more muscles during exercise.

5, taboo to take a bath immediately after fitness: If you take a bath without shrinking the pores on the body surface, it will hinder the discharge of toxic waste gas, pollute the ecological environment of internal organs, and cause decreased immunity and diseases. In addition, due to the continuous contraction of muscles during exercise, the amount of exercise is gradually increased to meet the needs of exercise, and the heart rate is accelerated. If you take a bath right away, the blood vessels of muscles and skin will expand, and the blood flowing to muscles and skin will increase continuously, making the remaining blood insufficient for other organs. Mild dizziness, severe shock.

6, bad state taboo exercise: exercise in a depressed state will cause excessive physical fatigue or sports injury, which not only affects the quality of exercise, but also is not conducive to physical recovery and muscle growth to achieve the purpose of exercise. Extreme things can backfire.

7. Avoid drinking a lot of water after exercise: Drinking a lot of water after exercise has a bad effect on the body. It is considered that at this time, the blood in the body is concentrated on the limbs and body surface, while the blood vessels in the digestive tract are in a contracted state, and the absorption capacity is weak. If a large amount of water enters the digestive tract again, it will increase gastrointestinal peristalsis and even cause stomach cramps. In hot summer and sweating, you should drink a small amount of light salt water many times to supplement the water and salt lost in the body or replenish sports drinks in time.