HOW: Begin by lying on your back with the hips and knees at 90 degrees, legs resting on a Swiss ball.
You're gonna take a breath in through the belly relaxing the pelvic floor. As you breathe out, bring your ribs down towards your pelvis, contract your pelvic floor, and gently let your knees fall towards one side. The hips can come up off the ground. Return to the starting position.