Start with your feet hip-width apart, knees bent, hands on on top of your knees, and a neutral spine. Keeping your legs static, create an arch in your lower back and look toward the ceiling as you let your hips tilt up. Then do just the opposite by creating a curve in your back, tucking your hips underneath you and looking toward your navel.
Do this exercise with the best exercise equipment. We recommend using a bluetooth chest strap heart rate monitor or a smartwatch for more training optimization & performance tracking.