What parts of the upper body does the speed bag work(boxing)? - what does speed bag doBEAST what he said and even the gym.
Especially the shoulders. Not the speed is really fast. It focuses on the rhythm of the hand-eye coordination and shoulder strength
Shoulder and arm muscles
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Especially the shoulders. Not the speed is really fast. It focuses on the rhythm of the hand-eye coordination and shoulder strength
Shoulder and arm muscles
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