I had the occasion of being "hung" up within our QM in Ottawa. The scenario was : Line Section QM had boxes on the top shelf I needed. Instead of taking the .5 min getting a ladder, I climbed up the center post. On the way down, slipped and grabbed for the first thing (the top). There was a notch that my middle finger fit into perfectly. Had I been wearing a ring, I am convinced to this day I would have lost the finger. All that remains, other than memories, is a couple of scars.
Just my 2 cents.......
Billy