INSANITY: A Year’s Worth of Weight Loss Results in 60 Days – Kingston, MA

Forget everything you think you know about high-intensity workouts. Because INSANITY turns old-school interval training on its head. If you've ever been to a Spin class, you know how that works. You motor along at a moderate pace for awhile – then all at once, you kick up your speed and heart rate – just for a minute or so. After that, it's back to a lower gear, giving you plenty of time to catch your breath.
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