1. Health

Intervals Add Spice to Your Workout

From Jerry Kennard, About.com GuideMay 17, 2005

If you want a workout that can help propel you to the next fitness level, burn more calories, increase your speed, improve your power and more, then it's time to learn more about this effective technique. So says Lynn Bode, certified personal trainer & author of this article. Read more about Intervals.
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