This is the first symptom of Webmaster Syndrome.
The second symptom is your skin turning deathly pale.
The third and final stage is your ass and middle-region spreading to previously unthought-of proportions.
My cure: get a bigger chair, change positions frequently. Lean back, sit cross-legged, sit on one leg... nothing like getting up to pee and finding one leg doesn't work... hitting the floor rapidly is much more fun than just having a numb ass!
