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.

I was doing an at-home workout the other night and didn't like one of the ab exercises the trainer had listed for the oblique muscles, so I decided to swap it out with a side-lying crunch. It's been ...

Certain core muscles can be difficult to target with normal planks and crunches. This lower ab and oblique workout hits them all. If your harder-to-hit core muscles had a campaign slogan, it would be ...