Wow. I feel so bad for all of us. I work 8+ hours on my computer. I'm sure I could cut it down if I had more flexibility in my schedule, but I can't really leave the office to go chill out for a few hours and then come back to my desk -- I sort of have to chill out in front of my computer screen for a few minutes, then back to work.
I've loved working from home the past few days. I get on the computer for three hours, go catch a yoga class. Get back on the computer for three hours, go for a run. Get back on the computer for three hours....
...but then I usually get on the other computer and play computer games for a couple more hours.