Positive. Basically, if your eating 1200 calories a day and then burning off 400 working out, your body isn’t getting the fuel it needs. Essentially, 1200 is the minimum that any body needs to live if you were to just lay in bed all day. Your body needs energy to workout - once again, the car metaphor. If you’re going to be burning more ‘gas’ while working out, you are gonna need to fill up more.