Exercise consumes energy and promotes the oxidative decomposition of fat stored in the body, thus reducing fat. But at the same time, frequent muscle contraction and exertion during exercise will stimulate muscle fibers to thicken and increase muscle mass. In the body, the water content of muscle tissue is much higher than that of fat tissue, so muscle is "heavier" than fat (strictly speaking, on the premise of the same volume). In other words, as long as the muscle "less" increases, it will offset the weight loss caused by the "more" reduction of fat. Eventually, the weight loss before exercise is not obvious.
Expand the advantages of information fitness:
Increase muscle strength and relieve fatigue.
2. Body-building is conducive to strengthening physical fitness and preventing diseases.
3. Fitness can improve the function of respiratory system and cardiovascular system.
4. Improve sleep and memory.
References:
Baidu encyclopedia-fitness