A social component has been shown to improve weight loss results. A recent study showed smaller groups are ideal.

if you’ve ever watched a team rally and come back from a huge deficit, then you’ve seen people in group flow.

What I do is something of a hybrid between personal trainer and group exercise instructor, which is to say, I am a group personal trainer.

Researchers used some tricky methods to determine how much motivation working with a partner - especially a partner who's always better than you - can provide in your aerobic workouts.

Zen Gray is a longtime fitness coach, motivator, and comedienne. Now she's a newly expecting mom, as well. Find out what Zen was like when she was a little kid who just couldn't sit still.