I had major heart surgery in 2017 that included a bypass for mu main coronary artery and a new pig valve for a bad aortic valve. So far so good for me at age 80.
I taught high school biology for 32 years, 1962-1994. Nothing beat good informative lectures with note taking, written and reading homework, and hands on lab experiences.
I worked one summer season at a drive in movie, ticket seller and day time clean up. I have many stories to tell. Together they could be made into a movie ala "Car Wash". Maybe some day someone will.