Sometimes I think of how, you know, everyone gets sick from time to time. They hide it so well on TV. Has anyone ever noticed in an ep of TNG an actor who was obviously ill? Nasal-congestion-impaired line deliveries or some such. 
I refuse to believe that in 7 years and working those crazy hours that nobody ever got a cold.

I refuse to believe that in 7 years and working those crazy hours that nobody ever got a cold.