Talking together, eating together, sleeping together. This is a live-in-lab. How do the participants keep warm during the night? I worry while slurping a delicious lentil soup at noon. My neighbour reveals to me the secret. And later, the artist Melis Simsek shows it to me for real. Do you know what it is? Exactly, a super long hot-water bottle. All this in the spirit of Beuys and warmth sculptures.