I was teaching and felt like I needed to take a break, and the next thing I know I wake up in the ICU six hours later," said Rich Anderson.

Instructions: For a full core burn-out, choose three or four moves from the list below. Perform as many reps as possible ...

How to do it: Grab a dumbbell and stand tall with the weight in left hand, core engaged, shoulders back, chest proud. Contract abs and lean to the left as you slide the weight down to left knee. Use ...