First of all, every single person is different, so while the answer is yes, that your body needs a certain amount of calories just to function each day, I think you might need a little more info on this.
Do a search on google or something on BMR - Basal Metabolic Rate. There are lots of calculators online which should help give you an idea of what yours is. They'll take into consideration your height, weight, activity level, etc. For example, I know that if I lay on the couch all day and did nothing but breath, I'd probably be burning around 1,500 calories.
However, when you ask if you can just eat 1200 and burn 1200, do you mean the 1200 you're burning as in your BMR, or do you mean an additional 1200 calories a day?
Is what you're proposing healthy? I'm not sure I can answer that. For me, I couldn't function on 1200 calories a day, and was always hungry when I tried to eat that little. And for me, my body stopped losing weight when I ate that little.
Hopefully someone with more info and knowledge on this can weigh in too...
Baby on board!! Due June 20th!!
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