When people are doing strenuous exercise, the heart is working efficiently. In a short time, the heart will send a lot of blood to the muscles of the upper and lower limbs. If strenuous exercise stops suddenly, the heart will still output a lot of blood, but the blood flowing back to the heart will be greatly reduced. At this time, not only can the brain not get enough blood supplement, but the original brain blood will be rapidly replenished to the heart under the action of gravity, resulting in temporary anemia of the brain and blackness at the moment, dizziness, nausea, vomiting and even fainting. In addition, a large amount of lactic acid will be produced in the body during exercise. If you stop exercising suddenly, it is not conducive to the decomposition and removal of lactic acid, and the exerciser will feel sore all over and the muscles will become hard.
Smart bodybuilders should add "epilogue" to the exercise and do some relaxation exercises after the exercise. First of all, you should slow down and continue low-intensity exercise for a few minutes. For example, when running, the normal speed is13 km/h. Before the end of the exercise, you can walk at a speed of 5 km/h for 5 minutes, and you can shake your limbs and walk back and forth. Secondly, do stretching training for about 10 minutes, and keep each movement for 15-30 seconds. Finally, taking a bath with 30-40 degrees warm water after exercise can calm the nervous system and accelerate the elimination of fatigue.