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The Next Challenge Is Going to Be Much Bigger
The idea is just to get your heart rate elevated to somewhere in the range of 125 to 140 beats per minute, or about 10 minutes. There's variations and measures around one's physical ability, perhaps their age, experience, et cetera. "I don't want you to see men push themselves into injury," says KFM coach Pete Cevallos. 'You're going to miss what you just had'