Because most of the time they are not properly warming up the muscles necessary for the physical activity your partaking in.
It's a pretty common symbol, mostly in the U.S. How ever it is two snakes with a set of wings, this stands for medicine instead of the correct rod of asclepius. I hope in some way this helps.
I believe the answer is C. This is because most men do naturally have more muscle mass, so they need more energy to function. This is not the case if you do a lot of muscle building activities, though.
