The greatest enemy to what you can know, is what you already know.
It's not how good you play, its how well you play it.
It's not how good you play, its how well you play it.
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I have heard that grip master thing works, I used to use an old hand strengther thing you squeeze and strengthens the muscles in your hands and wrist. Even squeezing those stress reliever balls are good for working the muscles in your hand.