I had always thought that a gameing device would most of the time make you gain some weight but the Wii Fit will make you lose weight and gain muscle to. The first day my dad had bought it and brought it home I was like this will be a peice of cake and trust me I made myself look like a fool. I want to gain a pound so I went to the weight training and it made me change my mind about it being a peice of cake. And it works like you are doing sit ups and it makes your abs feel sore and that means it is working. So I am going to keep on doing what I have been doing because that will mean I will get a six pack and then I will want to take my shirt off all the time ha ha. Well I am really suggesting the Wii Fit to whoever that wants to lose weight or gain muscle Because it is fun, exersizing and funny to watch people play the games on it. So hope that this review will help you out if you ever want to get a Wii Fit.