Hypertrophy: Muscles become filled with blood when we exercise, and they grow. That's called hypertrophy. The soreness is from Lactic Acid build up, a by product of exercise.
Answered 6/26/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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