Multi-tasking

I am trying to complete not one, not two, not three, but FOUR projects in one afternoon. All of which include typing and typing and typing and some more typing -____- My eyes are tired, my head is throbbing, and my back hurts. I mean, I know my limitations, but one can dream, right? Gahhhh this is just too freaking hard. The logic of procrastination adds much more to my dilemma. The more you procrastinate, the more you WANT to procrastinate. This is just-- gaahhhh