Push in the heel within your entrance foot, activating your glutes and thigh muscles to carry your body back into the starting stance. It's also possible to do crunches with your ft off the ground and knees bent. This technique may possibly continue to keep you from arching your back. https://wisesocialsmedia.com/story3540830/the-smart-trick-of-effective-exercises-to-do-in-bed-that-nobody-is-discussing