LIZ WHITE, CNN CORRESPONDENT (voice-over): If you're ready to sweat...</s>UNIDENTIFIED INSTRUCTOR: Recover, please. Awesome job.</s>WHITE: ... and ready for a challenge, try treading.</s>UNIDENTIFIED INSTRUCTOR: Treading is a comprehensive workout done on a treadmill and it coaches you from your warm-up all the way to the cool down.</s>LIZ WHITE, CNN CORRESPONDENT: Ellen Apet (ph) teaches the class at the Boston Athletic Club. The group hits the road running or walking and everyone goes at their own pace.</s>UNIDENTIFIED INSTRUCTOR: You can be next to somebody who's running an eight minute mile pace and you may be walking a 15 minute mile pace and every person is doing the best that they can do and you have someone rooting for you, which is awfully exciting.</s>LIZ WHITE, CNN CORRESPONDENT: Ellen called this particular workout double trouble, where she coaches her class up hills and along flat roads. Her students interact with the treadmill by constantly readjusting what they're doing.</s>UNIDENTIFIED STUDENT: Instead of hoping on the treadmill and getting bored and being on what I call the dreadmill, it's fun.</s>UNIDENTIFIED STUDENT: I've lost a lot of weight over the past four months and mentally working out is always good for your head. It clears you up. It's like taking a Valium.</s>UNIDENTIFIED INSTRUCTOR: Stay with it everybody. That's it.</s>LIZ WHITE, CNN CORRESPONDENT: Coach Apet says if you're stuck in a treadmill rut where you do the same easy workout every time, change what you're doing so that every minute takes you to a greater level of fitness. I'm Liz White (ph) for "Feeling Fit."
Feeling Fit: Treading Your Way to Good Health