I started working in Rheinau about a quarter of a year ago. At first, I worked in the steam treatment of seeds, standing on concrete all day long. After some time, I noticed that my whole body was aching in the evening, and I told my wife about it. Especially my knee, which had undergone several surgeries, hurt quite badly. Then my workplace changed to processing – still standing on concrete all day – but here the pain disappeared. When Markus Sieber came for the first time shortly after to announce a guided tour on the concrete floor, I asked him what was so special about this floor. He asked back if I didn’t feel anything different since there were people who felt less tired on this concrete surface. I denied. I am not easily convinced and not quickly persuaded by something new or different. It wasn’t until later at home that it became clear to me: My well-being had improved since working on this floor.When Markus then conducted the tour with students, I approached him and corrected my initial statement. Now having worked here for 3 weeks continuously, the pain is gone.