When running, muscle tissue cells also put forward higher requirements for the supply of nutrients, and it is necessary to strengthen the working intensity of the digestive system. The nutrients in the food you eat cannot be directly absorbed and utilized by the human body. Only after repeated digestion in the stomach and intestines can you change macromolecular nutrients into small molecular forms and be absorbed and utilized by the human body.

Gastrointestinal function and physical and mental health have a key impact on people's health. Regular running and exercise can improve the function of digestive tract. In the case of running exercise, it can stimulate the gastrointestinal tract to accelerate intestinal peristalsis, promote the digestive organs such as spleen, liver and pancreas to metabolize more digestive enzymes, and make food be digested and absorbed quickly and strongly.

According to running, the concentration of blood supply and oxygen supply in human brain can be increased by 25%, so sleep at night will also be improved. During running, the average lung volume increased from 5.8 liters to 6.2 liters, and the amount of o2 carried by blood night also increased greatly. During physical exercise, the frequency and function of heartbeat are further improved, and the heartbeat, blood pressure and ductility of blood vessel wall are also increased. Running can promote leukopenia and pyrogen transformation, which can eliminate many viruses and bacteria in the human body.

Regular jogging training will strengthen the anti-injury ability of tendons, tendons and joints and reduce the probability of knee joint injury. At the same time, skin, muscles and hooves can become stronger and stronger. To clear the sense of urgency, jogging can inhibit the metabolism of adrenal hormone and aldosterone, two growth hormones that cause anxiety, and release "endorphins" that make people feel relaxed. According to running, the body fat rate of women can be reduced by 12%-20%, and that of men can be reduced by 6%- 13%.

Before doing aerobic exercise to lose weight, fully adjust the body's potential heat to the ready state in advance, which is conducive to the regulation of internal functions of the body, stimulate growth hormone in the body, promote the learning and training of neurons in this area in the brain, and enhance memory to some extent. Prepare posture in advance before jogging, stand, put your hands on your waist, and subject knee joint replacement for about 5- 10 minutes. Warm-up exercises can increase the temperature of the whole body muscles, making them softer and less prone to scratches. Running time and speed are both important for healthy weight loss. If you want to lose weight, it is best to allocate 30-60 minutes for each run. Too little time can not achieve the actual effect of reducing fat, too long time will lead to muscle strain, which is not conducive to physical and mental health.