Group fitness instructors . A. demonstrate proper techniques for yoga and aerobics B. supervise the rehabilitation of sports injuries C. manage food service systems for schools D. teach good health concepts and facts

dude are you ok?

explanation:

what effect does exercise have on the nervous system?

the answer is c.

it hurts at first because " the cherry is broken" which is a thin layer of skin that breaks so the first time girls have sex it hurts and it bleeds but after the first time it does hurt again because the skin that ia torn does not break again/ grow back.

answerdecreased blood pressure;