Broadcast gymnastics, which students often call recess exercise. Why do you do exercises between classes? Medically speaking, recess exercise is considered from the perspective of human physiology and health care. Teenagers are in an active period of physiological changes, and the human body is in a long stage of physical development. Students' class is a learning process of seeing, remembering and thinking with their brains. When people use their brains, the cerebral blood flow will increase obviously. If the cerebral blood flow increases for a long time, the blood flow of other systems of the human body will also decrease accordingly. If the blood flow of multi-system tissue decreases for a long time, it will affect the healthy development of our teenagers. If the human body stays in a sitting position for a long time, a considerable part of the skeletal muscle of the body will be tired due to long-term tension. Coupled with learning with the brain, the blood flow of other tissues in the body is relatively reduced, which will have an impact on human health.

Intermittent exercise is arranged in the middle of the study time every day, and its purpose is to scientifically use intermittent time to exercise for the eyes, brain and fixed sitting position in a certain period of time. Is to adjust the various systems and organs of the human body. For example, by doing exercises, the muscles and joints of the human body can be activated, which can increase the blood flow of the limbs, redistribute the blood flow of the human body, relax the brain nerves, adjust the eyes, and reduce the physical fatigue caused by sitting for a long time. At the same time, through doing exercises, we can adjust the tension of human cerebral cortex, and breathe fresh air outdoors, which is of great benefit to brain health care, eye hygiene, optic nerve regulation and myopia prevention or prevention. However, there are still some students in the school who are not serious about doing the problems and deal with them. They don't follow the standard movements, and the muscles and joints of the whole body can't achieve the effect of exercise, so it is impossible to achieve the effect of health care through classroom exercise. I hope students have a correct understanding of "doing exercises well". Cherish exercise time, conscientiously and consciously "do two sports well", and let exercise really play its due health care role. And broadcast gymnastics competition is an activity to welcome the Olympic Games!