Blitz Sucks
blitz cycle sucks, don't waste your money. go with a cee product. Muscletech usually has good products and just came out with CEE Pro ($35 @ discountanabolics.com) - I haven't tried it yet though. I'm currently using NO-Xplode by BSN. It works pretty good. I get decent pumps, (not like they advertise, but decent) and the focus is increased a little. Good Luck.