The 8 Best Ab Exercises to Level Up Your Core Workout

This plank variation will build some serious heat. Put your stability to the test and fire up your abs by lifting up each individual leg.

1. Start in a high plank position, keeping your hands directly underneath your shoulders.
2. With your back flat and core engaged, life your right leg off the ground and slowly rock your upper body backwards and forwards.
3. With control, place the right leg back down in a neutral plank position, and repeat with the left leg. That's one rep.
4. Do three sets of six to eight reps.