How do you explain all the back, leg, joint problems of tradespeople? I hope you aren’t really basing this on sone work you did in your home. Surely, you know t

How do you explain all the back, leg, joint problems of tradespeople? I hope you aren’t really basing this on sone work you did in your home. Surely, you know that is not representative of the day-to-day work of plumbers, etc?