Well I bought one from Argos about 4 weeks ago and I can tell the difference in firmness, obviously you don't lose fat, but 2 people at work thought I'd lost weight. My daughter has used it even though she doesn't need to a few times and her waist has reduced, my other half has used it even though it's a ladies and he has noticed a difference and recommended one to his mate who has bought one. I'm getting him the male version for Christmas. The resell on ebay isn't bad, so if you didn't like it you wouldn't be wating too much money.