i was forced to swim all year, and my parents never let me be sick and miss things unless it was really awful. sniffles and stuff don't phase me. so when i got mucous i always liked to dive in head first and blow it all out my nose into the pool. disgusting, i know.
You're just not thinking progressively enough. Place your bed on the ceiling, problem solved. You see, this is why America's always been on the cutting edge of technology. We think outside our limitations.
I only really get ill when I go for a while without sleep (and even so, I don't think I'm actually ill, but rather psychosomatic tomfoolery as my body tries to trick me into resting).
That said, back in summer (that's in July, for people who live in REAL places ), I had to train for my job on 3rd shift and got hardly any sleep. I was ill for weeks in the dead of summer. What a load of bollocks that was.