How to Flutter
You Should Feel This: Abs
Trainer: Ashley Steele
Lie on your back with your legs fully extended. Life your legs approximately 3 - 4 inches off the bench. Stabilize your trunk by grabbing the bench behind your head.
Tighten your abs to lift your left leg approximately 30-degrees. Rapidly alternate in a quick-scissor motion by raising your right leg up while lowering your left leg.
Focus on keeping your core engaged and controlling the speed of your legs throughout the movement.
You should feel this working your abs, obliques, and hip flexor muscles.