Title: The Interval Training Workout: Build Muscle and Burn Fat
Review: I love training this way. It is so efficient. I've lost more weight using the intervals than just doing one activity for 30 minutes without speeding up or slowing down. I especially love the XL (I usually run on Sunday nights and it clears my head for the week).I would recommend this to anyone who wants to save time and become efficient at working out.
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