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 ...

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Reviewers rave about the product, too. One shopper called it a “game changer for core workouts,” and ...