Add Yahoo as a preferred source to see more of our stories on Google. "Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." Today's ab routines are more ...

If you’ve spent any real time in the gym, you’ve probably seen the ab roller sitting off to the side and wondered whether it’s actually worth your time. It looks simple enough, but the first serious ...

Which ab wheels are best? Often considered a difficult part of the body to exercise and define, abdominal work can be tedious. Yet, the results are rewarding. If you want to strengthen your muscles ...

Today's ab routines are more versatile than ever. Sure, you can slog through sets of situps and rounds of planks over and over again. But, more and more, core workouts incorporate tools like Swiss ...