I am experiencing severe fatigue. I fall asleep even when I have tons of things to do...things that I like to do. I used to exercise regularly and I enjoyed it so much, but now I have no energy, and when I do have a minute of free time I'm sleeping, but I don't feel like I'm sleeping by choice. I also have been experiencing some very strong head aches on occasion. I feel I am very healthy otherwise. I'm in my mid 20's, I eat well, and get plenty of night time sleep. Two of my close friends suggested depression, but I don't know what I would be depressed about. I have a great life with tons of potential for more. I'm starting to worry about all of this sleeping, because I am sleeping through hours of the day when I could be studying (I'm a college student), or exercising, or doing other things I enjoy. For example, I recently went to my first NBA game, and as a sports fan I was so excited to be there. To my horror, my husband was waking me up durring the fourth period because I had nodded off!! Any advice would be greatly appreciated. I don't want to be this tired and unenergetic all the time.