I live in Birmingham, Alabama and I go to two gyms. One has stalled showers with doors, a sauna, and a steam room. They suggest that you use towels to cover yourself in the sauna, steam room, and locker room areas. Most people adhere to the rules. The other gym I go to is generally open. Open locker room, open showers, open whirlpool, open sauna, open steam room. People routinely move around the locker room completely nude and only use towels to sit down or to dry off. I've often been in the open showers with multiple guys showering. I kind of believe they show off and size each other up.