@mffox I have not had BE or Intercellular very long. Intercellular Low Load since 2023 and on watchful waiting.
You may not be planning of living to 90 but considering overall how long you have done well since 1997.....you might just do that.
I am 83 and nine months in and...."somewhat' ....concerned I will live until 90 or even beyond. Somewhat concerned for various reasons...living alone, responsibilities of a house and concern for all the reasons we know about all senior type communities and then there are the finances in general even though at this time the financial is fine. We keep hearing....you don't want to live a long life and run out of money. For sure we don't want to run out of money for all the reasons we know, especially being single or becoming single.

I noticed that you mentioned lie on your back, I take it you just mean when doing the backstroke. I take it you don't mean lie on my back to sleep???
Barbara