Fit&Well fitness writer performing a dead bug . The dead bug is an excellent exercise for improving your core stability and protecting you from back pain. But there's a chance you've been doing it ...

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.

Keeping the back flat, lie supine on the floor, knees up, holding a stability ball between your hands and knees. Extend opposite arm and leg (left leg, right arm and vice versa). Repeat 10 to 12 reps ...