I used hydroxycut awhile back in an effort to lose weight and get myself to workout on a regular basis because I was having trouble with energy and motivation. it definitely gets me motivated to workout because of the caffeine but I felt jittery all day long and tended to get a little emotional every evening when it was wearing off. I had trouble sleeping for the first few weeks and I would get worn out in the evenings after the high of the caffeine had worn out. I did manage to work out a lot and get in better shape but if you stop taking it you are very hungry and its hard to keep up the previous schedule because you get very tired with the caffeine withdrawal. I guess it depends on what you are willing to deal with in order to get in shape. Personally, I think there are better ways to do it but I cannot dispute the fact that the caffiene makes me feel less hungry and more motivated.