Sliding Discs
Body Parts
Total Body

Step-by-step instructions

1. Get into pushup position on the floor and rest your feet on sliders (as you did in Day II). Bend your elbows to rest your forearms on the floor. Brace your abs and push your body backward so your legs slide straight back. Go until you feel your abs are about to lose tension, and then pull your body forward again. That’s one rep.