I actually asked my nutritionist about this and she said it's fine, as long as you're eating enough to get vital nutrients and minerals in the first place. I ate 1300 calories today (yay, back on track without feeling guilty

) and I did crazy exercise. According to spark people, I burnt 1990 calories. I'm sure it's exaggerated too, but if it is true, I would have - 690 calories today, meaning I'd have to eat 2000 calories for dinner? Yeah right. That's just not possible. I will be eating some more protein and drinking a glass of milk and having a banana in an attempt to save my poor muscles, but I generally don't increase my intake to compensate for exercise. It's extra. Of course, I don't exercise like this every day. Maybe twice a week.