Are you keeping up with your New Year's resolution to hit the gym? Maybe these girls can can show you a thing or two on how to build abs of steel. The girls at Gymnastics Gym Club in Calgary, Canada ...

Let’s face it, horsing around on a treadmill is not for everybody. But if you know what you’re doing and have the fitness level to match it (or are in OK Go), you can totally rock a workout. That’s ...