5 MUST-DO AB/CORE EXERCISES: RIPPED FREAK ABS
Add these abdominal/core exercises into your training program. Try performing all 5 exercises as a Core Circuit, moving from one exercise to the next with NO rest.
(Perform 2-4 Core Circuits, Resting 30 seconds between each Circuit)
Check out the full article detailing the anatomy, research and exercises for this video here: