As I indicated in a response to your previous article, PE was for me the ninth circle of Hell. On top of everything else we had gang showers. All the boys in the class piled into the shower naked. There was an old close-to-retirement gym teacher whose job it was to sit in the corner of the the shower room, clothed, out of the spray, and "monitor" it. That guy had landed himself the dream job of every aging pervert.
But on reflection this had a positive effect on me. I got out of high school unashamed of my body and of nakedness. (The implications of perv-in-the-corner did not occur to me until much later in life.)
When I was Wiccan I was always one of the first to get naked at bonfire dances. I had a beautiful body then. It did the talking for me.
Another earlier time when I was in my 20s and really skinny, I was walking in NYC on a very hot day. Passing a fountain, I took off my t-shirt and got under it. The force of the water was at the very edge point of stripping me entirely (I wasn't wearing underwear). I turned and saw the patrons of the posh restaurant the fountain was in front of clearly enjoying the show. So I kept at it. I was such a naughty boy.