Fallen Triangle can be a tricky yoga pose. Your legs turn away from your body in opposite directions. Your front hamstring is stretched beyond what may seem reasonable. Your core muscles--including ...

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.

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 ...