"Burpee": While the burpee is one of the most dreaded exercises out there, it is also one of the most effective! So set aside your hesitation, and embrace the sweat!//Modification (Advanced): Once in push up position (step 3), lower your body until your chest nearly touches the floor. As you lower, tuck your elbows close to your body so your upper arms form a 45-degree angle when lowered. Pause, and then push back up. Continue with remaining steps.