I know a few of you here chart your temperatures and this is something i want to start doing as well. I read somewhere that inorder to have an accurate reading each day I'd have to have at least 3 hours sleep and then check my temp before getting up or doing anything. The problem is that I suffer with insomnia and I don't sleep for a full 3 hours. Infact i wake up every 2 hours or less. Would this affect the reading? Any suggestions? How does it work for you?