I bent down in the shower this morning and promptly regretted it as I seem to have done more damage to my back than on any previous occasion (and there have been many) since whatever it was I did at Glastonbury 1995. Since on that occasion I was in my year of resting after my undergraduate degree, and it was the start of the second week of Wimbledon, a week of lying on the sofa doing nothing actually caused no interference with my plans whatsoever. This time it's slightly more important. Can hardly move.
The only moral I can see in this story is "never bend down in the shower".