My hobbies

Model-making: radio-controlled ship and planes
Deutsche Lebens-Rettungs-Gesellschaft e. V. (DLRG): life-guard and rescue-diver
Motorbike: motorbike
Martial Arts: Karate, Judo, Tae Kwon Do
Martial Arts: Ninjutsu
Ballroom Dancing: Standard and Latin
Computers: Commodore 64, Atari ST, Nixdorf 8850/DEM, historic programming languages and software engineering techniques