If you are a professional athlete or a semi-professional athlete, there are specialized physical fitness coaches or nutritionists in the training team, so you should consult their opinions, because it is important to look at individual differences.

In principle, it is very common for athletes to use tonics (this is not a medicine. You can use it, but you can't bring it with adults. These are not as simple as eating Chinese cabbage, and they need professional guidance at any time.

For example, branched-chain amino acids, combined with protein powder, have a better effect, but if the demand in protein cannot be calculated, it will be difficult. Besides, the nitrogen pump is not omnipotent. Generally, the effect is obvious when approaching the limit of resistance training, but it is more dangerous for teenagers to do extreme training. It is also unnecessary in terms of training effect, because the principle of muscle growth of teenagers is different from that of adults.

If it is an amateur, it is best not to use it. More importantly, pay attention to the arrangement of regular diet. For example, adding high-quality protein to food is more effective and safer.