9:50 no no Sazar was right. The taking of clothes part is about sharing body heat between people to keep warm longer. Clothes act as an insulator, a barrier if you so will, between bodies. So if the clothes can't sufficiently keep you warm, you want to get as little clothing between you and another person as possible whilst also trying to make a make-shift cover out of all the clothes to create an insulating barrier against the weather conditions.