really, really bad shit.. I feel like I lost a year of my life to it!! I started out taking it once and a while, then before I worked out, then before and after, then every couple of hours then I would even wake up in the middle of the night to take a shot.. then stopped working out, going out and having fun and became a couch potato I would go through a couple of bottles a week... Finially a couple of months ago stopped cold turkey and feel like a new person!! back to the gym and feeling great.. Unfortunatley a couple of my friends are still hooked and I'm trying to help them stop.. Stay far, far away..