Evidence continues to mount that staying active is protective during aging. Here’s a report on a study of 72 people between the ages of 60 and 80 observed for a year. They were randomly assigned to a program of aerobic exercise or stretching and toning activities. At year’s end, the brains of the aerobic exercisers had better blood flow than did those of the stretchers and toners. This is not a ‘hard’ outcome but suggests the exercisers would also have better brain FUNCTION, which is the important thing.

https://www.usnews.com/news/health-news/articles/2022-11-16/aerobic-exercise-reinvigorates-the-aging-brain

Maybe your thing is swimming, or biking, or you need a stick or two to help with balance and movement. That’s ok. Mix it up a bit. See if your Medicare plan gives you gym access. March in place in front of your TV. Whatever works for you. Moving > not moving!