Hi, I'm Denise Druce for LIVESTRONG.com. Let's talk about ab stabilization versus crunches. I'll show you the right way to do a crunch safely and effectively. So let's take a look at ab stabilization. Start by lying on your back with fingertips on the back of the head and you want to press your head back into your hand so that you are not pulling on your neck and then you don't have to lift very high, just raise your shoulders and press your bottom rib down. So think of squeezing the bottom rib toward the hips and just really compressing keeping the core tight. So that's ab stabilization using all the muscles around the core. The difference is in traditional crunches, a lot of people come up a little bit higher, perhaps even all the way up and what happens there is then you are working hip flexors and not all of the muscles of the core. That was the difference between ab stabilization and traditional crunches. I'm Denise Druce for LIVESTRONG.com.