To increase the amount fibers in a muscle, you need to exercise at low intensity for increasingly longer periods of time.

slow twitch or fast twitch

Claustrophobia is an example of a(n)

What kind of wound occurred when the skin scrapes against a hard surface and tiny blood vessels break in the outer layer of skin

What is one technique to a person get proper sleep? eat a heavy meal before bed. exercise intensely before bed. practice relaxation breathing before bed. use electronics before bed.