Protein powder is used to supplement protein, that is, to grow muscles. The purpose of most people's fitness is to build beautiful muscle groups. In order to achieve this goal, it is necessary to lose fat and gain muscle. In addition to exercise, muscle building requires you to provide enough nutrition-protein, so as to synthesize new muscles and make them bigger and more stylish. Foods containing protein include lean meat, beans and fish. These foods also contain some other substances, such as fat, and the proportion of protein may be unbalanced, which will affect the absorption. The nutrition in protein powder is almost pure protein, which is relatively convenient to supplement, so whether people who exercise regularly like to drink protein powder depends on the intensity and level of your fitness. In the early days, we only need to strengthen protein's intake, such as eating more soy products, eating two eggs a day or only eating protein, and we don't need to deliberately supplement protein powder. Mainly to reduce fat, reduce body fat, muscle exercise has had a certain effect. Then consider taking protein powder under the guidance of a coach to increase protein's intake.