how many calories is 1 pound of body fat
Dear Countin' Cal , Theoretically, about 3500 calories equals one pound of body weight. This means that you'd have to take in 3500 fewer calories than you usually do, over a period of time, to lose one pound. Keep in mind, this is in theory; what happens in the real world can be very different.
The typical approach is this: first they set a 500 calorie per day deficit and multiply that by 7 to get 3,500 calories. Well, 3,500 calories is one pound (kind of, as above 3,500 calories is only for one pound of fat and represents 5 lbs of muscle) so they should lose exactly 1 pound per week.