Why the craze?
After so many off-the-wall trends (Shake Weight, anyone?), classes like Equinox's new TreadZone are taking a back-to-basics approach. "Walking fast or jogging is one of the most natural and easy things for the human body to do," says Gregory Florez, a trainer, executive coach, and spokesperson for the American Council on Exercise. "And there's no better cardio workout." Interval training, which is the basis of all three of these routines, is proven to burn the most calories and get you in tip-top shape fast as can be.
Related: 21 Ways to Burn Fat Faster
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Before you get started, reduce the likelihood of soreness (ow) and injury (more ow) by doing a few stretches before you really start moving. Florez recommends stretching both hamstrings for at least 30 seconds by standing with your feet hip-widthRead More »from 3 Unboring, 20-Minute Treadmill Workouts