He gets very scientific though. He includes formulas and all. I remember I did get into a discussion (ie an argument) over this and yes he does include formulas for maintenance calories , BMR, RMR and what not. Those are helpful so people can get a better idea of what they are looking at diet wise. Also the diet part of the book is the best part. Where he talk about what to eat and what not to eat is definitely the best part. I would pay attention to that