I have never paid any attention to calories, except as a rough gauge of my weekly activity level. A very clever doctor named Ralph Paffenbarger studied a group of Harvard alumni. Those who burned > 2500 kc/week lived longer. Calories were estimated by hours spent in various very roughly classified activities. I don't own a scale, or a monitor. I do have a concept2 ergometer that I have had and used about 2 years.
I am a naturally active person, if I never again recorded my workouts I would still weigh what I weighed 50 years ago, without very much obvious redistribution.
Ha