Abdominal wheel

The abdominal wheel works the entire core by resisting lower back arching.

Get on your knees on a mat, hands on the handles of the wheel placed in front of your knees, arms straight under your shoulders.

Roll the wheel forward, lengthening your body as far as you can without hollowing your lower back, then bring it back by contracting your abs.

Keep your pelvis slightly tilted backward the whole time. If your lower back arches, reduce the range of motion.