This doesn't apply to me, i'm just asking for a friend. He started about 3 weeks ago and says he's only lost around 3 lbs but his clothes are definitely "feel" looser. He certainly looks like he's lost weight, at least to me. I've seen posts saying this can happen if you happen to work out a lot, but he doesn't work out at all. (he's trying to loose about 20 lbs total) Is this possible or is the perception that he feels like he's losing weight just in his head?