What provides a stimulus for modifying muscle strength and size?

Question

During workouts, what is the stimulus for alteration of muscle size and strength?

Answer 1

Change in the muscle’s strength or size occurs when there’s an imbalance between the mental signal sent and the physical limit of the muscle. Whenever the brain sends an exceeding amount of signal than what the muscles can currently perform, that puts a challenge to wherever the restoration must take place for them to adapt making them bigger and stronger with time.