Hello everyone and Happy New Year!

During the Summer I race BMX. This is a type of racing which basically is a quick sprint with some jumps on the way. I was wondering what the best way to build the fast twitch muscle fibers is. I heard that downhill sprints is the best and I have also heard that the best way is by doing plyometrics (or basically jumping). If anyone knows the most efficient way of training please let me know.

Thanks, TVbuster.