Don't eat too much before training, you can eat some monosaccharide food to provide energy for training. After training, you should supplement a lot of carbohydrates, and then add appropriate protein. The best food is tuna, beef and milk. But make sure you have enough carbohydrate supplements. Intake of a large amount of protein will lead to acidity in the body, and acidic constitution is the beginning of the disease! ! ! Then eat more fruits and drink more water to help the kidneys decompose protein. The human body ingests a large amount of protein. If the water supply is insufficient, it will cause a heavy burden on the kidneys, ranging from kidney calculi to renal failure. The common fault of bodybuilders is that protein supplements too much. In fact, it is still a question whether the body can fully absorb these protein. Protein is difficult to digest, and long-term large intake will cause damage to the digestive system. At the same time, protein is an energy supplement with extremely low efficiency, that is to say, the efficiency of transforming protein into energy is very low, far less than that of sugar and fat. Therefore, under the condition of appropriately increasing protein intake, it is beneficial for the body to consume as much carbohydrates as possible. However, it must be noted that if you consume enough carbohydrates, you should pay attention to drinking water and eating fruits at ordinary times, and it is no problem to appropriately increase protein's intake. The situation that harms the kidneys is that the intake is too large for the human body to bear, and then this state will appear for a long time. Finally, I wish the landlord a good figure.