hello,
I am a 27 year old male , and I dose off almost any time I sit down, I can sleep for days and it dont make a differnce.. It also happens when i'm driving. Its like one minute I'm watching T.V and the next 20 or 30 mins went by and I never remeber falling alseep. But I'm not tired. PS Im a 27 male 5'11 and weight 312 pounds, no one in my family has this problem either