I read the results of a study which compared the health benefits of exercising 20 minutes a few times a week to spending long hours in the gym or running, or whatever. It seems that for the serious exerciser, the actual time spent at exercising far exceeds the extra life time gained.
Of course, you could hit by a bus, and all that time in the gym would be wasted entirely.
I moved the exercise bike in front of the computer this week. Almost to 11 hours for the week. If I can FReep at the same time, it’s not wasted, right? :p