Slow Twitch (:
Slow Twitch (:
you muscles are made of many individual muscle fibers. When you lift a weight or exert a force over and over again you damage these fibers (more specifically actin and myosin). When your body repairs the damage, you get more muscle mass!
your muscles burn when you exert yourself because when you lift heavy or lift for an excess ammount of reps you get a build up of lactic acid in your muscles
The ability of muscles to exert a force one time.
strength activity!!!!!!!!=)
strength activity!!!!!!!!=)
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Strain force
muscular endurance
muscular endurance
Yes.
Yes. There is your heart, and several other involuntary muscles.