Corrections in red.  Stylistics in blue.

The Need for Sleep

Usually, all the people are divided into early birds and night owls.  I suppose, I'm definitely a night owl, but it's not a problem for me to wake up early. So, I get up to work at 5:20 am every morning, and feel just good. 

But that changes completely when I have to study!.. I don't know what happens to my system on those occasions, but even having to even awakening at 8:00 am to go to the university seems unbearable... And then I feel sleepy during the whole day... It feels like a disease!

Yesterday I got up at eight o'clock, remembering I needed to prepare for the math exam. Finishing that quckly, I turned to my usual morning exercise. I took out the training carpet and the weights, then I lay down on the carpet...

When I opened my eyes, next time I was still lying on the carpet, сurled up into a ball next to the weights. XD I hadn't even noticed when I fell asleep!

I hope I will stop being a "Sleeping Beauty" soon...as soon as I finish my mid-year exams. =)

Don't confuse "to lie" and "to lay".

Please see:  http://www.grammar-monster.com/easily_confused/lay_lie.htm