since i quit smoking i've become SOOO tired. over the last couple years it seems that i've been getting more and more tired during the day anyways, but since i quit, man i'm so tired...could my metbolism slow down THAT much??!! i can fall the sleep at any time and sometimes in the afternoon, sitting at my desk, i just start dozing off!! and, yes, i have done it with people sitting in front of me!!!