Stuffing Myself Like A Turkey

Have you visited a doctor lately? Lack of appetite, especially in combination with lethargy, can be a warning sign of many different conditions, particularly digestive ones. Also emotional ones. Once you've eliminated pathological reasons for your problem, then you can figure things out from there.

If you aren't hungry don't eat. I assume you are trying to gain weight, correct?

No, I'm at a healthy weight so I'd rather not gain. I'm trying to maintain. And I can't eat when I'm hungry. because I'm so rarely hungry. It wouldn't be enough.

So did you lose weight at this low calorie level and now you want to know how to maintain?

Don't worry about the carbs they'll take care of themselves have protein and fat you'll be fine

No, I'm at a healthy weight so I'd rather not gain. I'm trying to maintain. And I can't eat when I'm hungry. because I'm so rarely hungry. It wouldn't be enough.

OK, so you say that you have no appetite, are lethargic, that you've always been this way, that you work out for an hour (I'm assuming regularly), AND you say you can maintain your weight at 1400 calories or less? If all of this is true and you're not exaggerating...Unless you're abnormally tiny (like the size of an 8-year-old, maybe), then you should be losing weight at 1400 calories or less. If you are not, that says to me that you have a metabolic issue, especially if it's been lifelong or at least long-term. All of the above is really not normal. My first suspicion would be a (very) sluggish thyroid, but like I said it could be a lot of things. Including nasties like a slow-burning cancer. I would make an appointment with your doctor to have basic bloodwork done, especially a metabolic panel, as soon as possible. If all comes back normal, that's great. If not, then it's good that you found out before things get nastier because, trust me, you DO NOT want to deal with the long-term complications of a metabolic disorder.

Eliminate the pathological possibilities first, then think about your diet would be my advice.

I'm not lethargic anymore. I was lethargic when I was only eating when hungry, and got in only 700 calories. And who knows, maybe I do need more calories. I just never feel hungry for them. @godfidence- it may seem like a small amount to you, but to me it's huge.

Your body can adapt to almost anything - it can even suppress hunger. People who struggle with anorexia don't feel hungry because the body has adapted.
Point being, you could have a medical issue OR perhaps you just need to eat more to feel like eating more? It's definitely something I'd speak to your health care provider about.