1. Supplementing protein helps muscle synthesis, which helps to restore and improve muscle strength after fitness.

2. In order to maintain the normal metabolism of the body, protein will have a series of physiological and biochemical reactions in the body, which will make our body "rotate" normally.

3. Provide energy. When the utilization of sugar, the main energy-supplying substance in the body, is exhausted, protein can provide energy, which is helpful to improve the fitness effect.

4. Promote muscle growth. Protein powder has high nutritional value. You can eat some protein powder after fitness, which can effectively increase the growth of muscle fibers and promote blood circulation in muscle parts, thus making muscles fuller.

5. increase immunity. Protein powder can provide amino acids and arginine needed by human body, increase the secretion of immune cells and improve immunity.

It should be noted that although protein powder has many benefits, it is not suitable for everyone. Consult a doctor or dietitian before use.