Muscle memory is such a powerful thing when not trained away. Recently my wife and I took a trip that involved quite a bit of swimming. As a kid and teenager I enjoyed swimming but unfortunately I haven't done much of it in the last 30 years.
So, muscle memory.. On the recent trip, every time I surfaced from swimming underwater I would use my hands to slick back my hair to keep it, and water, out of my face. This is a very distinctive motion that actually starts just before I surface. Every time, without fail.
Reader, I haven't had hair, much less enough to need slicking back, in over 20 years. It made me laugh nearly every time I surfaced. It has been so long since I spent any time underwater that I had forgotten that I even did it. I chalk that up to rarely swimming now and being blind AF w/o glasses so I wouldn't swim underwater much when I did. It's probably been 10+ years since I did it for any significant time.
Anyway, muscle memory is a hell of a thing and so is being able to laugh at yourself.