I keep seeing different calculators for basal metabolic rate (calories you burn in one day and would have to eat exactly to stay at your exact weight/body comp).
Some of them take into account LBM, some BF, some activity levels, some not.
Is there any way developed yet to monitor a person for a long enough period to actually see what that person is burning in a day? How would this be done (body temp/heart rate/other factors)?
Is it even possible?