Ab Exercises - Step by Step Ab Exercises Part 2

Planks are a great way to work the core, but you can add more power and intensity to the exercise by adding a jump. This advanced move not only works your core, it targets your legs and arms while elevating your heart rate.

1. Begin in a plank position with the hands wider than shoulders and the body in a straight line from head to heels.
2. Jump the feet in, bending the knees and landing in a squat while keeping the hands on the ground.
3. Jump the feet back into a plank position.
4. Repeat, jumping the feet in and out as fast as you can for 30-60 seconds.