Ray Hatcher. CPT ,PES, MAT, PPSC on Instagram: "I used to think I’d break my back on the ab roller until I switched this one thing. Your pelvis follows your belly button so if your belly is poking forward so is your pelvis. Pulling your belly button back engages your core which is stabilized by your glutes. This won’t make it easy but it will help you build the strength to do sets if you stick with it. #abroller #fitnesstips #howto #coreworkouts #getrightray"