I am often tired often when I leave the house to go at a store for example, when I go back home I feel extremely tired but as soon as I enter the house I feel fine, I love computers and I mostly play games or surf the net at home however I also like going out but I can't seem to do too much or else I ( like I said ) feel tired, and I easily keep myself awake but still know that if I don't i fall asleep, my sleep hours are regular, although lately I have been sleeping longer in the morning. I go to bed at 11-11:30, usually wake up at 7 but these days I wake up at 8:30-9:30 without even noticing the time. Is it normal?