Injuries I've suffered have been of a more sedentary nature.
I often get a crick in my neck from trying to lift down one of the heavier books, or at least suffer a lot of earache from huffing and moaning when I ask for one to be lifted down for me.
I got my One Ring stuck on my thumb when all my hands swelled up when I was up t'spout, and I achieved that injury with very little effort indeed!
I've also had pins and needles many a time from sitting on my bum for too long while writing lengthy posts on here and I'm sure I'm not alone in thumping something after watching a long post with a load of pertinent quotes painstakingly copied out disappear into the great yawning maw of a busted internet connection...