The capacity to consistently increase the amount of stress on the muscles underlies all progression of natural muscular growth. This stress causes your body's homeostasis to become disturbed and is a key factor in the growth of muscle. There are three basic processes that promote muscle development in response to stress and the ensuing disruption of homeostasis.
First: Muscle Tension
You must apply a load of stress that is larger than what your body or muscles have previously adapted to in order to induce muscle growth. Why do you do this? Lifting progressively bigger weights is the primary method. This added strain on the muscle aids in chemical changes that enable the release of growth factors including mTOR activation and satellite cell activation.3
The relationship between the motor units and the muscle cells is also most significantly impacted by muscular stress. Why some people can be stronger but not as big as others is explained by two additional reasons.
damage to the muscles
You have likely felt the effects of exercising-related localized muscle injury if you have ever felt sore after a workout. Localized muscle damage results in the release of immune system cells and inflammatory chemicals, which prompts satellite cells to become active. This doesn't imply that you need to be hurting for it to happen; rather, it only means that your muscle cells need to show signs of the workout's damage. Typically, other mechanisms gradually reduce discomfort over time.
Metabolic Stress, Third
If you've ever felt the "burn" from an activity or the "pump" at the gym, you can feel the effects of metabolic stress. When bodybuilders claimed that the "pump" made their muscles bigger, scientists used to doubt them. It appears they were on to something after more examination.
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