Effects of exercise on the blood

Most of us prefer to do some exercise, because exercise has many benefits for our body, and we will feel sweating profusely when exercising, and feel comfortable after exercise. Exercise can not only help improve our physical fitness, but also help us lose weight. So what effect does exercise have on blood?

Exercise can promote the body's metabolism. During exercise, firstly, energy consumption increases significantly; secondly, it is accompanied by oxygen debt. Oxygen debt refers to the difference between the body's oxygen demand and oxygen supply. The oxygen debt generated during exercise must be repaid after exercise, that is, after exercise, the body must continue to supply more oxygen than was required in a quiet state. Generally, when people exercise, the activity of their respiratory muscles is enhanced, which creates a mechanical massage effect on the abdominal wall and gastrointestinal tract, thereby enhancing the body's digestive function. If you persist in physical exercise for a long time, it can promote the growth and development of the human body. Puberty is the period when a teenager's body transforms from that of a child to that of an adult.

The height and weight of adolescents will show a rapid growth trend during this period. Physical exercise has shown its great effect during this period. Data show that teenagers who regularly exercise have an average height increase of 4-9 cm, an average weight increase of 4-9 kg, and an average chest circumference increase of 2-5 cm compared to those who are inactive. This is because the height of a person is mainly determined by the length of his spine and lower limb bones. The growth of bones requires active physical exercise. Movements such as running and jumping speed up blood circulation, provide a good stimulus to bone growth, and increase its firmness.

A large part of weight gain comes from muscle growth. Exercise can develop muscles and make the whole body radiate strength. During exercise, myocardial excitability increases, coronary arteries dilate, the ATPase activity of myosin increases, and the interaction between myosin and actin increases, thereby increasing the contractility of the myocardium. Long-term exercise can increase myocardial glycogen content, myoglobin, and glycokinase activity, increase the myocardial ability to absorb blood glucose, enhance the ability to oxidize blood lactate and tissue breathing capacity, and improve the functional reserve of the heart. People who exercise regularly have thicker and stronger myocardium and their heart's "reserve power" is extremely strong. During exercise, muscle activity increases the body's demand for oxygen and the production of carbon dioxide, thereby stimulating the respiratory center, causing breathing to deepen and speed up in order to take in more oxygen and expel excess carbon dioxide. People who exercise long-term have well-developed respiratory muscles, increased chest cage movement and diaphragm contraction, and increased chest cavity volume, thereby increasing lung capacity.

People who exercise regularly can increase their breathing volume per minute by 10 times or even more than usual when engaging in strenuous activities, and their "vitality" appears to be more vigorous. In fact, adolescence is the period when the internal organs of the human body gradually develop and are the most plastic. Don't miss this excellent time for exercise.