one woman was left mortified at another gym-goers behaviour in the changing rooms. Apparently, she did something unforgivable "for ten minutes". The woman titled her Mumsnet post: "This is grim ...

that is the grimiest of grim. For f***'s sake, sit on a towel at least!" Someone even shared her own similar experience, penning: "There was a woman like this at my gym - she'd always spend ages ...