SLEEPY HEAD ~.~

I can't fight this feeling anymore. Why is it that when 3:00 strikes, suddenly I feel sleepy. SO SLEEPY.. amf! I don't want to drink coffee. I must not feel sleepy, I must not feel sleepy, I MUST NOT FEEL SLEEPY. Still have to work. My students are expecting for me to be alive and jolly. Oh GOD, help me. Help my SLEEPY HEAD ~.~