1. Lie on your back and raise your legs and bend your knees so they are bent at a 90-degree angle. Place a stability ball on your thighs and extend both arms up to hold the stability ball in place. 2.

Add Yahoo as a preferred source to see more of our stories on Google. Two young fitness woman athletes doing a dead bug exercise on a foam roller, to work on their core muscles and stability. One of ...

The dead bug exercise may have a funny name, but it's a seriously effective move. The slow and controlled core strengthening exercise involves lying on your back and moving your arms and legs in a way ...