Ace 8095 said:
There is a major problem with the science of nutrition and exercise in this country. Mainly resulting because people have tried to fit the results of scientific studies into the preconceived notions that lowering fat intake and exercising more will make people lose weight. The evidence for that is null. "The importance of exercise in weight control is less than might be believed, because increases in energy expenditure due to exercise also tends to increase food consumption, and it is not possible to predict whether the increased caloric output will be outweighed by the greater food intake." (NIH conference report, 1977)
This is stupid.
If you eat 2000 calories a day and don't exercise your body will burn calories at a certain rate.
If you eat 2000 calories a day AND exercise, your body will burn more calories than before, thus making you lose weight.
If you go changing the parameters and eat more food when you exercise, then you don't get the benefits of the burning off the calories during the exercise.