Do 10 reps, alternating sides, so you complete 5 reps on each side. Contract your abs each time you raise your arms and legs. Works your deep abs and your pelvic floor.
-Modified Navel Crunch: Get down on your hands and knees. Raise your right heel to butt height and raise your left hand straight out in front of you. Contract your abs in towards your spine. Lower your arm and leg, returning your hands and knees and reverse, raising your right arm and your left leg. Do 10 reps of this exercise, alternating your arms and legs so you complete 5 reps on each side. Remember to contract your abs each time you raise your arms and legs.