I'll take it easy for a little when I'm sick, but I can't veg out or else I just turn into a pile. I think it's a great idea to work out even a tiny bit, but I don't want to over do it, because then I turn into a sick pile. It's a balance, and it depends what you are sick with. It's very important to circulate that lymph though and to get the crap out of your lungs, and to fire up the metabolism a little. And then after a workout I charge back up with food, water and sleep. I think sleep is massively underrated. Last year I was relieved of much responsibility in grad school so I got that 8 hours I always heard about - I became a different person. It's amazing what paying off your sleep debt will do for you physically and mentally. Anyway, off topic.