Hi, im 16 and im going to join a professional Boxing Gym in the next 2-3 months or so but I dont want to go in there as a novice with no experience in Stamina or endurance. I thought maybe if i trained hard enough on building my Heart and Lungs before I signed up to the gym, then maybe i could be more advanced.
Also, I used to be extremely quick in my hand speed ( ex. like throwing Jabs and hooks) but ever since i started working out my upper body ive noticed that ive grown bigger but at the same time ive decreased my speed. Any 1 know why?
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