Hey guys! Any advice you could give me to improve my alternate picking speed and endurance, to be able to picking fast for long periods of time. Such as in slayer's angel of death, Meshuggah's Bleed, Etc. I can manage to play Both of the riffs but after awhile my picking slows down drastically, Are there any warm-up exercises, pointers, anything that you can tell me to help me out? Thanks!