I've been singing properly every day since I was about fifteen or sixteen, and I have never had any problems with my voice, ever. I've had a sore throat here and there, had a cold and sung through it, but that day it just went while I was onstage in Paris during a radio show. It was literally like someone had pulled a curtain over it.
My body doesn't have any rhythm, you know. I've got quite good rhythm when I'm singing but my feet are very much two left feet.