This is a metronome-based exercise for improving your snare-drum technique.
Starting at 100 BPM, play 8th notes alterning right-right-left-left and right-left-right-left for 32 bars. The metronome increases of 5 BPM for another group of 32 bars (starting with a pre-count bar) and so on to reach the speed of 300 BPM !
Practice this 30 minutes MP3 exercise every day, this is your wrists fitness program.
For best results, practice on a pillow.