If your so-called "powder" is some nutrients, not any hormones or illegal drugs, then it will not be found out during the physical examination. On the contrary, there is no guarantee that you will pass the physical examination. In fact, there is no need to do any fitness before becoming a soldier. When you arrive at the army, you must be forced to train. I can't do it without practicing. I won't give you any powder. It's all natural exercises.