The Computer fries my life force.

I usually spend 30 - 45 minutes a day on the internet, checking email and reading articles here and there from infowars.com to everything and wikipedia. One BIG problem however is that computers suck the life force out of me. Yes, everytime I end my use of the computer after a period of more than 20 minutes, I feel totally drained and disorientated. It sucks and I messed with the contrast and brightness settings on my moniter but it didn't fix anything. Oh Well.