it is TRUE that our immune systems don't work as well when as well when we're under psychological stress.
The answer is A. Size of the muscle cells, ability to store fuel, and blood supply to the muscle
Muscle endurance : The ability of your muscle to do continuous work over a long period of time
Size of muscle Cells : Affect muscle strength
Ability to store fuel : Affects energy storage to do work
Blood Supply to the muscles : Affect muscle durability ( prevent injury)
Can Be Sign Of The Brain And Nerve System And Normally Sudden Of Electrical Activity Of The Brain That Causes A Seizure :D