Do you have scoliosis? I’ve run across many people today who have it. It seems to bother some people and not others. Of course, we’ll never know what Richard the Third felt - he left no notes about it (unless destroyed by the Tudors!)
I do know that medieval archers from the Towton battlefield and skeletons of archers from one of Henry the 8th’s sunken battleships, reveals many twisted spines. It’s hard to believe the heavy bows did not contribute some stress on spines. Richard was not a professional archer, of course, but was put through his paces as a young knight.
Yes, but not severely. It causes me a lot of spasm and is one reason I got into the profession.