Katharina Smets is an audio maker and a member of Antwerp's biggest cold plunge club, known for her expertise in cold water swimming. She shares fascinating insights into the health benefits of cold exposure, highlighting its positive impacts on mental health and addiction recovery. The conversation also touches on the cultural significance of cold swims during winter festivities across Europe. Additionally, they humorously discuss Greece's festive pricing policies and the controversy surrounding the Vatican's Christmas tree, making for a lively and engaging dialogue.