As I have gotten older, I have really gotten into swimming for exercise.  What about you?
I swim every morning. I use it as physical therapy for my shoulder I just fixed. Did you know the sport started in the UK in the early 1900s?
I did not know that.  Did you have a rotator cuff tear?  You would think it is muscles torn but it is actually tendons are what is really torn.
No just old age. Doctor said swimming would be great to get my range of motion increased. The crawl stroke works best. It was developed first in South Africa in the 1880s.
I am going to guess the first form was the breaststroke?  It seems the most natural way to swim.