Step 1: Start at the top of a push up position with your legs extended straight behind you.
Step 2: In one motion, jump feet in together towards the chest, working your abdominal muscles and legs.
Step 3: Quickly stand upright and either extend arms overhead or go for a vertical jump.
Step 4: Return to the push up position by placing hands on floor and jumping feet out together.
*To make this exercise a little easier, you can use an elevated surface like a bench or step.
*To make this one more difficult, try the FULL version of a burpee and add a real push-up when you're in the straight leg position.