Well, the day after I quit work, I managed to come down with a lovely chest cold. I stopped drinking coffee also (for the record 3/20/2014) . . Not sure that was part of my master plan but it is done. Aside from the cold I feel great. Lots more energy and sleeping is better too. No stomach upsets either. It really hasn't been long enough to realize the true effects or if it will even stick, but we shall see!