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This Bodyweight Circuit Will Make Your Muscles Pop in Just 20 Minutes

Bicycling - By Brett Williams

Prime your muscles with an intense 20-minute circuit session. If you want an impressively ripped torso and arms (or just feel fitter overall beyond the bike), you don’t need to pick up a weight at all. That’s how Jay Cardiello, the celebrity trainer behind 50 Cent and Kevin Love, designs his workout …

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