He came in naked dried a bit, laid his towel out on the top bench next to me. I was sitting in the bottom bench in the middle. A few min later I saw him enter the shower area naked rinse off and enter the sauna. I got to the locker room undresses rinsed under the shower and sat in the sauna. Pretty sure he was following me looking at me thru the mirrors. I ran another ten min and then left to his the locker room subtly looking at him. I noticed he came in and jumped in the tread mill. One day I was on the treadmill at the end of my gym time.
It looked like he plumped up a bit as I turned the water off and dried off. When I opened them he was standing out his stall drying off, first time I saw him nude. I left and took an open head, lathered and then turned with the shower on my back facing out, Eyes closed. He left the sauna first and took a stall. I usually take the open showers since the curtains are nasty. My gym has 5 open shower heads and 5 stalls with curtains.
For awhile it was a nod and a “have a good day” as ine of us leave to shower. And realized he’d be in the sauna at the same time.
I noticed they same guy married late 40s on the treadmill same time as me. I’d go about 330-430 week days to work out and then hit the locker room for a sauna and shower. That’s how I’ve been in this same situation. Many of us have the same schedules, hit the gym at the same time each day and get to know that others are in a same schedule.