answer:What is 23andme? I will tell you that once you quit, really quit, after a month or so you will feel good. You will wake up better, because you will not be in the caffiene crash. You will probably sleep better, and so you won’t feel the need to for the caffeine. It is tough at first, really tough. You probably feel like the caffeine does not affect you much at all, that you can sleep with no problem, etc., but as you withdraw you will be sleeping everywhere, be exhausted, and have a bad headache. I recommend slowly decreasing over a a week, don’t go cold turkey, and have advil nearby.