RHONDA ROWLAND, CNN CORRESPONDENT (voice-over): Boot camp fitness classes meet at 6:00 a.m. every morning at this Atlanta park, rain or shine, for an hour's worth of basic training techniques.</s>UNIDENTIFIED MALE: It's cardio, it's endurance, it's, you know, it's calisthenics.</s>ROWLAND: Because each participant works at their own pace, people of all fitness levels, from beginner to marathon runner, can join. And by the end of the two week class, they've built muscle as well as friendships. For "Feeling Fit," I'm Rhonda Rowland.
Feeling Fit: Atlanta Boot Camp