Add Yahoo as a preferred source to see more of our stories on Google. If you’re looking to sculpt some killer abs and increase your core strength, you might first turn to crunches. Hey, it’s a habit.

Ready to take your yoga practice to the next level? In this video, we'll teach you how to do the side crow arm balance step ...

Crunches are so old school, and planks are effective, but totally boring. To get the killer side abs of your dreams, forget snooze-worthy, repetitive moves—and bust out your yoga mat instead. (Tone up ...