Originally posted by Usedtobox
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If you are looking to test your kids wind, throw him on a treadmill, have him sprint 3mins, 1min break to put his gloves on, then give him a good mitt session. Do each 3xs. The sprints need to be fast and when u do mitts focus on him keeping his non punching hand up.
If he can do that, u dont need to worry about stamina but of course dont forget it.
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