I feel I should reply to this since I made this comment. I should have said, avoid drinking excessive amounts of coffee. Yes, the information comes from the Atikins center and from a few other sources such as Jay Robbs Fat Burning Diet, and others since coffee causes a rise in insulin levels. On the flip side coffee is an excellent stimulant which helps increase fat loss and workout intensity, I was just pointing out that when trying to do a low carb diet, CKD, or the one I posted, which emphasis the release of glucagon as part of its success, too much coffee would cause insulin release which inhibits fat loss. I didn't mean to suggest that no coffee should be consumed, or that fat burners aren't useful. Just wanted to make things clear.