I burned out my drawing hand by using it too much. The common word for it is writer's cramp. The fancy words for it are focal dystonia. The symptom in my case was a pinky finger that went spastic when I tried to draw.
There's kind of a toll you have to pay with a cat; if you don't pet her for 10 minutes she'll bother you for six hours.
Normal people... believe that if it ain't broke, don't fix it. Engineers believe that if it ain't broke, it doesn't have enough features yet.
I have a perverse attraction to risk. Not physical risk but emotional, financial risk - anything than can't kill you immediately.