You must burn 4000 calories to eliminate one pound of fat. It is difficult to burn that calories in one day. But by taking it step by step , you can determine your calories need and diminish those calories. You must know that the minimum numbers of calories to maintain functions, breathing , digestion etc, and determine your activity to lose weight. You can calculate how many calories burn by exercises and how many calories you eat. In order to lose weight get Fat Burning Furnace it is not scam. It is actually very truthful. This is 250 pages downloadable e- book. It details all the workout and nutrition you should follow. It is very easy and not complicated. Please see Fat Burning Furnace review. It is causing a shake up and the diet industry.