what was said above is true, but stretching helps alot to. Stretching ur hamstrings helps a ton, as they help with your back too. Id say this is prob the most helpful stretch for me. Stretch out ur calves to and also just reach for ur toes as this is the motion used for most grabs. If u keep it up it can make a huge dif. I used to only be able to get liek 4 inches from the floor w my legs straight now i can touch it