Looking to get more muscle on cardio days? Hector Roca trained champions like Arturo Gatti, Iran Barkley, and Buddy McGirt at Brooklyn's prestigious Gleason's Gym. He recommends these boxing moves.
1) HEAVY BAG PUNCH-OUT On the heavy bag, punch as hard and as often as possible for 30 seconds. Take a 30-second break and repeat this 10 times.
2) TABATA SPEED BAG While working with the speed bag, punch as quickly as possible for two minutes. Take a two-minute rest and then repeat this five times.
3) I CAN'T DO NO MORE With a weight vest, perform as many pullups as possible in a row. At failure, do pushups. When you hit your limit, hop on the bar and begin pullups again. Repeat until you can do no more of either.
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Don't Miss: The all-access reality series "Mayweather/Marquez 24/7" only on HBO®. The four episodes chronicle the preparations and back stories of both fighters as they train for their September 19, 2009 pay-per-view showdown.

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