Getting old??

Recently dont know what had happened to me...
I am so easily get tired and exhausted.I have to sleep more hours than before...

Previously,I managed to stay up till around 1 or 2am but now I am like an old man,sleep very early around 12pm and wake up late as well in the morning...

I start to get frustrated about this.I dont want to be like that.I think I sleep too much and this may reduce my workloads everyday...

I am finding the cause of this...Is it because I am getting old?Is it because I spend too much energy for my day?Is it because I sleep less during my previous holidays?Is it because I too stress?Is it because of my diet?...If it is,I think I shall eat meat >.< ...What's the root of the problem???...Still a mystery now....

Exam is just nearby,hope I get rid of such bad behaviour as soon as possible and I wish to boost up my capability and memory or else I may not be able to finish in revising all my notes...They are still accumulating there...T.T....Really so sad to know about my recent condition....I dont want to fail....Please save me!~

I am almost lost...What's best describe me now??....Nervous,panic,stress,afraid,mad, and etc ...