Okay, I've done wrist weigts, and that doesn't help. You don't need stronger wrists, just a loose one. I've played several players who have been fairly short, and skinny (and I'm not saying you need to be muscular for tennis, I'm not), and they could hit very fast serves because their motion was so fluid. That's what I need help on, how can I get that "loose wrist" motion?
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