Because most of the water in the body is evaporated in the form of sweat, when there is less water in the body, there will be less stool, and it is not easy to discharge the water in the stool, and there will be less toxic substances in the stool. In fitness, the physical function is strong and the metabolic ability is enhanced.

It is related to insufficient water supply. If you increase your exercise, but don't eat vegetables and fruits in time, it may lead to water shortage in your body. Strengthening exercise will consume more vitamins and trace elements, so some people like to drink mineral water, which makes sense.

Extended data:

Fitness long-distance running is beneficial to prevent and treat diseases, accelerate blood circulation and clean up harmful substances in the excretory system, thus making it difficult for harmful substances to stay and spread in the body.

According to the determination,/kloc-running 3000m in 0/6 minutes or 5000m in 25 minutes can reduce blood cholesterol. This has a good preventive effect on the elderly who are prone to different degrees of hyperlipidemia, which in turn leads to arteriosclerosis, coronary heart disease and cerebrovascular disease.

Long-distance running and fitness are conducive to a good mood and a happy spirit. Because this kind of long-distance running does not pay attention to the outcome of the competition, it only strives for fitness in a relaxed and happy way, so it is very conducive to alleviating the mental and psychological tension brought about by high-tempo and high-intensity sports in modern society.

According to medical experts, this kind of relaxed and pleasant exercise can best promote the release of endorphin bark, a polypeptide substance in the body, thus causing lasting euphoria and sedation. In addition, because long-distance running makes people full of optimism, it helps to increase appetite, strengthen digestive function and promote nutrient absorption.