To gain muscle through weight lifting, you must have both metabolic fatigue and mechanical damage. When you lift heavy, the contractile proteins in your muscles must generate enough force to overcome the weight's resistance. This in turn can cause structural damage to the muscle. Mechanical damage to muscle proteins activates the body's repair response, muscle size increases as a result of the damaged protein fibers. The ATP, an energy component that supports the contraction of your muscles, is used up by the muscle fibers, which results in metabolic fatigue. They are unable to continue fueling muscle contractions or can no longer lift the weight effectively, this can also result in muscle growth. Gaining muscle hypertrophy requires both metabolic fatigue and mechanical damage. #Shorts #muscle #workout #hypertrophy



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