Sheer Exhaustion Equation

One whole day of DotA AllStars + Overnight work = SHEER EXHAUSTION

Right now my eyes do need something to get it open up until 9AM today. My mind's not functioning well, and I am craving for food. I had made myself 4 cups of coffee, but still it never worked for me.

I can't imagine yesterday that I just played DotA AllStars with Sam, Jeremy and Jeffrey. I just had a couple of meal breaks to spare my tummy.

So it means that I am almost awake for 24 hours, and I had been infront of a PC for about 20 hours. Will that explain why my eyes are tired?

*Looking for my bed*