Men were required to avoid "semi-erections." If a man became aroused, he was instructed to turn over onto his stomach or enter the cold water immediately. Public displays of affection beyond a quick kiss were forbidden.
As hardcore magazines became available, the innocence of the nude body was lost. A naked person was no longer seen as "natural"; they were seen as "pornographic." The fence around the camps had to grow higher. Vintage Nudist Camps
Kids played badminton, went on hikes, and learned to swim—all nude. The philosophy, championed by psychologists of the era, argued that nudity inhibited sexual delinquency. The idea was that if the human body held no secrets, children would grow up with a healthier attitude toward sex. Men were required to avoid "semi-erections