Hi. This might be a silly question, but where does the fat go when you lose weight? Is it literally "burned?" And if it is, how does this work? I also heard from a friend that you cannot get rid of fat cells in your body-she said the fat cells just reduce in size. Is this true? That seems really odd. Also, if you count your calories and for example, you burn 3500 calories more than you take in the whole week, so that you lose one pound (approx 3500 calories = 1 lb of fat), is that lost pound all fat? Thanks!