I was tired like that and found out that I have sleep apnea. Since you keep "waking up" (a slight arousal to breathe) all the time you sleep then you don't get restful sleep. I now use a cpap most of the time at night. When I can't because I'm congested, I find that I am more tired and have a harder time getting up in the morning. One of the most observable symptoms is loud snoring. If you find that is true, you might want to talk to your medical doctor to see if you need a sleep test.