There is a misconception that the term muscle memory is a term related to how muscles learn to do certain tasks which is done through repetition of the task mainly and the brain refines how much each muscle should flex/ relax. That why in sports athletes would repeat the same shot or movement in practice so the movement gets refined and the reaction is instant in a real game.
What muscle memory actually is related to muscle growth; where a muscle that has grown before from work out and shrunk (from lack of of work out) will grow muscles quicker when they start working out again than those who hasnt grown their muscle in the first place.
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