Plus, easy variations to make them more or less challenging.

While a lot of effective core exercises have you working out on a mat on the floor, there are other loftier options. Just look up to add some variety to your core routine, and try a hanging leg raise.

Add Yahoo as a preferred source to see more of our stories on Google. But there's a right way to go about the exercise—and there's definitely a wrong way, too. "You've seen variations of this exercise ...

While a lot of effective core exercises have you working out on a mat on the floor, there are other loftier options. Just look up to add some variety to your core routine, and try a hanging leg raise.