text: Sounds like depression to me. I have been diagnosed with bipolar a couple of years back... and for months at a time i feel sluggish, sleep tons and i am unmotivated... and some months i can get anything done and i don't like to sleep during those months.  I have a very mild form of bipolar.  but I know that during my down months it is hard to pull myself out of bed at all.  I don't necessarily feel "depressed" but my body sure does.  I can sleep for 12-15 hours a day during those times. I say the best thing to do is to contact your physician and find out if it is a physical or physiological.  Another thing that I have found helpful is to improve you diet and exercise.  It really does give you so much extra energy.