I have wondered this too! My guess is that your net calories should be at 1200/women, 1500/men, as Bob says in the book. But I really don't know. I've been keeping my net in the 1200-1500 range because I'm running a whole lot at the moment, but if I were exercising less, I'd stick to the 1200 net.

I don't think he put another caloric intake level for people who work out because supposedly this is how people eat on the biggest loser and they are working out for hours a day it seems. It is 2000 cals limit for men. 1200 for women...non-negotiable according to Bob. Good luck. If you really truly want to know your metabolism and you can afford it, try out the BodyBug arm band monitor. It can even tell you how well you are sleeping.