Which came first

Swimming nude or sleeping nude.
When we moved into this house, it had a pool with a low chain link fence, so I could only swim nude after dark.
It didn't make sense to put something on to go to bed, so I slept nude on nights I went swimming.
Early in the second summer. I began sleeping nude every night.
I made a short halfhearted attempt to wear something in bed when fall arrived but decided to continue sleeping nude.
33 years later, I still do.