sleep, healthy eating, and exercise are fundamental to living a long and fulfilling life. I think it's great that people are trying to determine in a quantitati

sleep, healthy eating, and exercise are fundamental to living a long and fulfilling life. I think it's great that people are trying to determine in a quantitative way when we've "slept good." I sure as hell can use a device that can tell me if I've slept well, so i can try to establish a pattern between how i feel the next day and what these devices tell me as to how i slept.