I count my calorie. I typically burn about 3400 and eat about 2800-2900. I am in process of losing about a lb a week. I am using Fat Secret and count just about everything I eat in there (and if there is home made stuff I can't... I just look at all ingredients used and create a meal out of set of that). So far it has been pretty much spot on on my weight loss vs. calorie intake/consumed.
Using same Fat Secret, If I slept all day long 1772.5 kcal is used if I put sedentary. I guess you are just a lot more efficient than some of us Machka.
PS) when I wasn't exercising... I believe I was eating about 2500-3000 calories... I was around 190lbs... and my weight was stable around there... That was only about a year and half ago.