 He also studied with Magnus Hirschfeld at the Institut für Sexualwissenschaft.Subsequently, he trained to be a school gymnastics teacher, finding in nude physical exercise the symbol of 'a new beginning for a new society'.Finding difficulty in putting his radical body culture ideas into practice at two mainstream schools in Moabit in the early 1920s, with the support of the Prussian government he created its own Institute for nudist education, which by 1929 had 3,000 pupils.