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One million years ago (sometime before 2020), Peloton had a series of Bike classes designed around heart rate zone training. Christine D’Ercole would tell you what zone your heart rate should’ve been in for each part of the workout, and you’d adjust your effort accordingly. Those classes are long gone, but Peloton is dipping a toe back into the world of heart rate training with its new “Zone 2” collection.
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