SAN FRANCISCO, CA--(Marketwire - Feb 5, 2013) - High-intensity interval training (HIIT) is all the rage and Les Mills, creator of some of the world's most popular group fitness programs, has amplified ...
“Run and dodge!” Sarah Hippert roared, whipping her students into a frenzied dash. Suddenly she gave the order to halt and demanded squat jumps, lunges and pushups. Then the whole routine repeated ...
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