Ricky Savi/Aspen Institute
Festival-goers stretch and lunge under the watchful eye of celebrity fitness expert Bob Harper, star of the NBC show The Biggest Loser. Harper told participants, "Find something you really like to do, and then make sure to do it four to six times a week." He also recommended having the right music "banging in your ears." (Harper's own workout playlist is heavy on the Black Keys and M.I.A.)
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