Actually, in extreme cases the human body can go through a metabolic process known as calorie wasting. Here's how it works: Consider this: whatever your current daily calorie consumption average is, lets say that you increased it by an average of 400 calories per day for one year, with no other changes to your activity level. Then lets say you increased your average calorie consumption by an additional 600 calories per day for the following year. If you do the math, with a pound of fat equaling 3500 calories, this would mean that in those two years you should gain over 100 pounds, right? Unlikely to happen, although you would likely gain some weight. Where did these extra 365,000 calories go? Answer: they were wasted by the body as part of a million year old metabolic adaptation. Here's another example: According to the math, If a person reduced their daily caloric intake from 3000 to 1000 calories, it would result in a 60,000 calorie deficit and a 17 pound weight loss the first month, and a 720,000 calorie deficit and a 200 pound weight loss after one year. But what if the person started out at 200 pounds, would that person disappear? Of course not. Once again, the body is indeed capable of "wasting" calories.
