A liberating high comes with group nudity at Dark Mofo – it can turn anyone into a giggling fool | Sian Cain

As the nude swim approaches, nerves won't let up. Maybe my leg hairs will stop me having a heart attack from the cold?

Gym showers, sex parties, European beach holidays, walking into the wrong changing room, a knife fight in a bathhouse: there are so many ways to be naked in front of strangers. Some of them are even legal.

Shivering naked with 2,000 people on a Tasmanian beach on a winter morning is legal, if not usually my idea of a great day out. But when given a waiver form asking you to sign away the risk of a heart attack and showing your arse on national television, who refuses that kind of invitation? Not I.