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 are people who get less tired on this type of concrete floor. I denied it because I am not easily convinced and not quick to believe something. It wasn’t until later at home that the connection became clear: My well-being improved since working on this floor. When Markus then conducted the tour with students, I approached him and corrected my initial statement. Meanwhile, having worked here for 3 weeks now and the pain is gone.