Burpee

Lower into a crouching squat with your hands on the floor.
Do a squat thrust by jumping your feet back into a plank position.
Do one basic push-up, bending your elbows and then straightening back to a plank.
Jump your feet forward to your hands, and come into a squat.
Do an explosive jump straight up, getting as much height as you can.
This counts as one rep.