Secondly, explain the training objectives and training programs.

Third, consider economic conditions and taste preferences.

The purpose of fitness is to gain muscle. The worst thing is to add some messy "nutritious" plant protein powder, and the best thing is to separate high-purity whey protein. Who doesn't want to use a good one? To put it bluntly, different money means different goods.

I really need to know. I think you should follow the above three rules.