Sleep!
At 74 of course have a prostrate issue. (good for 1 to 2 get ups a night)
On top of that I have never been a deep sleeper. My nights are more of a series of cat naps. At my age I take a few script drugs, not sleeping pills my docs do not want me to use them!.
They say the older you get the less sleep you need well that sure appears to be true. A problem I have that has been discussed with a couple doctors is my brain (as small as it is
) does not shut down fast or easily. Lying there with a brain on overdrive is a hard thing to work around.