Desire....to sleep nowadays.

I have noticed these days, Im turning more and more of a sleeping pig!! I always feel drowsy at lectures, yawning incessantly during studies and worst, sleeping for more than 8 hours most of the time. I have no idea what is going on in my brain but I just cannot help feeling the drowsiness in my mind. Time to time, I just wanna go back to room, spread myself on my bed and hug my pillows to sleep. In psychology class, I had learned that pons in our brain are responsible in regulating sleep and dreams. Is the pons in my brain have become less stable in the regulation? Or is it just my mental condition constantly sending messages to my brain saying that I should sleep..again. = = Looks like I better regain some self-discipline before I really turned into a lazy, sleeping bummer. *yawn~~* (even started to feel bleary from typing a blog..zzz)