During my visit to a sauna complex yesterday, I noticed tension between two older women. I was already sitting in a room with one of them when another woman and her husband, both of a similar age, joined us. 
The woman I was with observed both of them and the man more closely. Then I saw the two women exchanging glances that weren't friendly.
We all left the room about 10 minutes later, and the single woman stood so close behind the married man at the door that her breasts lightly touched his back. The wife noticed this and moved back between them in the anteroom. It really seemed to me like this was about power or competition for the man, and I wondered how a catfight between the two of them would have played out in a private spa area. Both were around 50, curvy with soft bellies and big, already sagging breasts, and their pubic hair was trimmed.