Too much excercise?

I've been thinking about this lately. I don't think there's such a thing as too much excercise, but here's the thing: I think that I might be starving myself by excercising too much.

On an elliptical, I can burn at least 800 calories in an hour. Then I do some laps in the pool. That ends up totalling to over 1000 calories for one gym visit.

However, on those gym days, I still only eat between 1200-1400 calories a day. I'm at this place where I feel disgusting if I eat more than 1400 calories a day. I've heard you should eat more if you excercise a lot during the day, but that makes me not want to excercise at all.

So how true is this? If you burn 1000+ calories a day working out, can you still just eat 1200 calories and be fine? If not, how much more do you need to eat to stay healthy?

you know the answer.  if you're eating 1200-1400 and then burning off 1000 at the gym--on top of what you burn just being--you are starving yourself.  no doubt.

how much you need to eat depends on your age, size, weight, and whether you're trying to gain, lose, or maintain.

So that's probably why I gain back three pounds if I eat like one bad thing, right? That kinda sucks :/

What if I increased my calorie intake to 1800 and still burned about 1200? Would that be healthy? Then I'd just eat about 1200 on non-gym days.

If it helps, I'm 18, between 5'6-5'7 and around 165 pounds. I want to be about 150.

1,000 calories per workout is a lot, you must be running and a fast pace to burn that much. since it is very difficult for the human body to let you burn that much. if you are burning that many calories you need to increase your eating, you should be eating around 1800-2100 calories on your exercising days. you are starving your body and over training which is why you have not seen the results you want. To avoid the over training you need to keep your cardio to an hour and eat to help your body to recover