Why exercise can keep you fit

Everyone knows that exercising on a regular basis helps us keep fit, but few people know the reasons why exercise can help us keep fit. Because exercise can improve health due to the body's own adaptability and the effect of use it or lose it. The part of the body we exercise regularly will absorb more energy, and the part of the body that we exercise for a long time in life will become stronger, while the part that we don't exercise will decline.

Our bodies are incredibly powerful and incredibly amazing and smart. When you use a certain part of your body frequently, your body will know it and quickly mobilize valuable nutrients in the body to supplement this part, making it stronger. For example, when a person is running, the heart and lungs work faster and are used more than usual. The body then knows this and quickly replenishes the heart and lungs with nutrients, so the heart and lungs become stronger. The bones and muscles in the limbs and other parts of the body are also being used intensively, and the body will not sit idly by. It quickly mobilizes a large army of materials to replenish the muscles and bones, so the muscles and bones become better.

Normally, when the supply of nutrients and raw materials is good, the body will have a certain amount of "inventory" and reserves. When some parts are in need, the body first mobilizes and uses the "inventory" substances. But when some nutrients are lacking and there is no stock to adjust, the body can only "tear down the east wall to repair the west wall" and send them from other parts. The first parts to be mobilized are those that are rarely used or less important. This is the saying "use it or lose it". The consequence of doing this may be that some parts become stronger while other parts are weakened or damaged.

From the above, we can see that sports and fitness are also based on nutrition. If the nutrition is good and the supply of raw materials is reasonable, you will be healthy even if you only engage in daily activities and do not exercise deliberately. On the contrary, without reasonable nutrition as a foundation, exercise will not necessarily lead to health. It will not only be futile but may even result in the consequence of "taking money from one pocket to fill another" and bring side effects.

Regarding this article's introduction on why exercise can help you keep fit, I believe you all know that exercise can help you keep fit because the body's functions adapt to the state of exercise, promote the absorption of nutrients, and make the heart and lungs stronger. Therefore, exercise can help you keep fit, and regular exercise will allow the body to have the ability to adapt.