I must be one of those people Linus wants to kick. Too bad for him. I love taking a break from staring at a screen, and I feel way better, physically and mentally, after a good run or a good rowing session. My lower back starts to feel stiff and cramped if I go for more than a day or so without exercise.

Also, I can't imagine life without skiing, and that requires a pretty decent degree of fitness. Anyone who doesn't ski, or doesn't ski hard enough — you don't know what you're missing, and I feel sorry for you. :) (<--- Smiley for the humor-impaired!)