As I experiment and examine the spell I notice that its effect is literally to cover the body in magic power. You can think of it as a magic power mecha suit, yet the main problem with the spell is how much energy it wastes. In my previous life I had quite a bit of medical knowledge, and because of that I understood the human body, this all helped me squash the useless waste. I know the point that you should protect by the situation from a flow of the blood, the expansion and contraction of the muscle, and the movement of the body’s structure during strenuous action.