Your mum probably told you to put on a warm coat on chilly days, because otherwise you would catch a cold. She was wrong! Exposure to low temperatures seems to be very healthy for a human being. Iceman Wim Hof discovered that cold can strengthen and relax both mind and body. Dr. Cheryl de Boer (ITC) and Jet van der Werf MSc (ET) are both certified Wim Hof Method trainers and explain the beneficial effects of breathing techniques, cold showers and ice baths. With chilly experiments! In cooperation with Ockham and Paradoks.