Back to Course PROTECT YOUR BACK WORKOUT CEC 0% Complete 0/0 Steps Introduction CEC How the Core Spine Works CEC How to Brace Your Core CEC Phase I CEC Phase II A CEC Phase II B CEC Warm Up CEC Cool Down CEC Back Breakers CEC PROTECT YOUR BACK WORKOUT CEC Warm Up CEC Lesson 7 of9 In Progress ← Previous Next→ Warm Up CEC