What age were you at your physical prime ??

@Musicman Yes, construction work will get you into shape. 👍

@DogMan Yes it will! In those days we didn't have air nailers so we hand nailed everything. Between swinging that hammer all day and toting that pressure treated lumber I was the man! 🙂

@Musicman Lol, When I was in the Air Force, working on fighter jets, we had to use a speed handle, as there were no cordless drills.
Some skin panels had a hundred little screws.
Maybe that is why I have arthritis in my shoulder now. 🤔

@DogMan I bet you are right. One day years later my help called off for the day so my wife came with me. I was nailing plywood sheathing to the walls. About 10 am my compressor broke. So I had a choice. I could stop the job and go buy a compressor or I could hand nail for the rest of the day. I chose the latter. That evening on the way home we pulled into Home Depot and I have never been happier spending money on a new compressor in my life! Lol!!! My poor arm was wore out! 😢