Can too much exercise lead to weight gain?

If a body-builder: Very hard for exercise to increase weight unless one is a body-builder. Exercise burns calories, so if one does not eat or drink more calories than he is using during his exercise, then his body will burn up fat as fuel. However, if a person drinks a large orange juice (about 300 calories) while exercising, and exercises away only 200 calories, he will still get fatter even though he's exercising.

Yes: Yes because muscle is heavier than fat.