Start the movement on your knees and hips extended or body up tall. Drop your hips down quickly and rebound up as fast and as hard as you can so your entire body elevates. Land in a good athletic position with your knees out slightly and your chest up.
Start with 3x5 and build your way up to as many as 6x5. For athletes that can't do them on their own you can set up a reverse band variation in a rack. (Courtesy Geno Buono)