"i have been on this for 4 months and have lost 18 lbs.  i think i have stalled because i am not sleeping due to taking it too late.  i also only had about 40 lbs to lose so i&#039;m thinking it may be slower compared to people who want to lose more.  my biggest concern is absolutely no one can tell that i have lost anything at all!! this makes me think that i&#039;ve lost all muscle and no fat.  how could 18 lbs not show?  i haven&#039;t worked out but am going to start to this upcoming week.  has anyone else had this problem?"