5-Minute “No-Movement” Plank Workout For Abs, Chest, Butt, And BackThis plank workout engages all your core muscles in 5 minutes. It's the fastest way to feel the burn in your abs, butt, chest, and back. Mark Norey, CPT 9 years ago
Five-Minute Plank Workout To Abs Of SteelTo get strong abs and core, more power and better coordination, you should perform this five-minute plank workout at least 12 times per week. Mark Norey, CPT 10 years ago