well.....check this out. I started my cycle and in about 10days i gained 6lbs. I thought it was fat. I know it wasn't water I didn't feel bloated or anything. I keep hearing that 15lbs of muscle for a 12wk cycle of 500mgs of test e is common, and 25lbs of muscle is possible. Since I started the clen my weight hasn't moved up, actually down 1lb then back up 1lbs, so basically it seems to be holding me where am at. I guess the only way to tell its muscle and not fat would be to check BF% every week. What does it sound to you more experienced users, was i gaining fat or muscle. I'm about at 3500 calories a day and around 200gs of protein ed.