Watch fullscreen. Behind the scenes at La Chambre swingers club in Sheffield. The Star, Sheffield. Sheffield swingers club La Chambre is re-opening after a major refurbishment. See our behind the scenes tour of the club. Browse more videos.

Until the age of 28, Marie Calvert had only ever had sex with her husband Barry - but when she took up swinging everything changed. A year-old woman who says she has slept with 3, men has told how she got into swinging after her husband left a raunchy magazine in their kitchen. She told how she radically changed her life after she and husband Barry decided to get into the swinging scene more than 30 years ago, with the pair eventually setting up a swingers' club in Sheffield. Eventually I told him we should give it a go.

Three hours was pretty much my limit. He walked me up and through the building until we were standing at the foot of an enormous bed in a dimly lit room. On it were nine naked men kneeling round a single naked woman, her body hardly visible beneath the sprawling mass of male flesh that was probing her in a slow, methodical silence. I wanted to see what unfettered male sexuality looked like, as I felt deep down that there was something in all of us men that needed to be kept in check. I wanted to find a man who had let himself go, to see what it could tell me about men, sex and maybe even my own limits and boundaries.