For a few days, I couldn't knit at all.
Then, i exercised, and knitted for a few minutes a day, and now, I can
knit for about an hour and a half, (in 30 minute increments), without
getting any irritation.
The gym is helping a lot. I didn't realize how much flexibility I had lost in my arms. Bad to just give up exercising, after age 50.
Now, I try to work from the top down, every day, with exercises.
Getting older is not easy. More maintenance.