1) all of the exercise calories to be eaten back
2) half of the exercise calories eaten back
3) none of the exercise calories eaten back
The reason I suggest a preference is because of the fact that you are not
deducting the resting energy expenditure time spend exercising when you "eat back" the calories.
What this means, is say i do 2 hours very low intensity work at a mets of 2 and burn 200 calories an hour for 2 hours.
This is 400 calories that the system will ask me to eat back.
However by exercising 2 hours I didn't burn 200 calories I burn normally sitting.
So not only am I eating back the calories, but I am eating back my deficit.
In fact, with a 300 cal deficit goal that I have, I would be eating back 2/3 of that deficit!
In effect, giving a 100 cal deficit. No wonder dieting is so easy!
With difference exercises and time the error will differ, but it will be an error nonetheless.
Afterburn or EPOC will vary but is incorporated into ones activity level.
Eating half the calories back makes sense as an option so that it takes the fact of not
deducting REE into account, if this system is not going to.
That is my suggestion.