Burpee

Instructions

1. 
   Start by standing with feet at shoulder-width.
2. 
   While keeping your back straight, squat down until you can touch the floor.
3. 
   Put your weight onto your arms, and jump back into a pushup position. Keep your core tight, and do not allow your back to collapse.
4. 
   Jump your feet forward to your hands and stand back up, and, in one motion, jump with hands overhead and hips extended.