Warm-up can overcome the physiological inertia of internal organs. We know that any object moving from a static state needs to overcome its own inertia. When the human body enters the working state from the static state, it also needs to overcome its own inertia, which is more complicated than other objects. If you do warm-up exercises, you can improve the excitability of the nervous system and mobilize various functions of the human body to enter the working state. Generally speaking, the activities of motor organs can be mobilized quickly, and the highest working efficiency can be achieved in a short time, while the internal organs are more inert, and it takes longer to mobilize to the highest level. Do a good job in warm-up activities, mobilize the functions of internal organs in advance, and reduce the disharmony between the functions of internal organs and muscle movements during formal exercises.
Warming up also helps to adjust the state. We can do warm-up activities to enhance the metabolism of muscle tissue, increase heat production and raise body temperature; The increase of body temperature may enhance metabolism, thus forming a "virtuous circle". Make the body in a good stress state, which is conducive to formal practice.
In addition, the increase of body temperature can release oxygen in blood to tissues, ensure the supply of oxygen and improve the function of nervous system. When the temperature rises, the blood circulation speeds up, and it can also prevent muscle spasm during swimming and frostbite during winter sports.