I set out to provide counter-evidence. These emotional reports on the Pneumatit company website for “concrete with breath and life” seemed strange to me at first glance. They talk about “astral effects” and “ethereal expansion.” In short, it all sounded like some kind of miracle reports that I don’t believe in anyway.

In the company premises, I pick up two almost identical, coded concrete spheres, switch them from one hand to the other and notice: One sphere remains cold in my hands; the other becomes warm. Sieber looks at the code on the bottom: The sphere that feels warmer in my hand contains Pneumatit. The same applies to two similar-looking sample plates: The one that seems more “sympathetic” to me contains Pneumatit.

Then Sieber takes me to a very ordinary, modern covered cowshed. The cows stand on grooved concrete. Next to it runs a wide concrete road towards the building with milking machines. Sieber asks me to walk along this concrete road.

It’s incredible, but even after just a few steps, I feel light as a feather and warmly enveloped; I could do yoga on this piece of concrete or set up my desk here. Even in the narrow space with milking machines where you are below ground level, I feel relatively comfortable – except for the cold metal of these machines.

Whatever Sieber and Martinez have done seems to work well indeed! If you want to test it yourself, you can visit Pneumatit GmbH in Rheinau (Switzerland). All I can say is that my attempt at providing counter-evidence has failed! When it comes time for our upcoming private home renovation, I will contact Pneumatit GmbH again to mix concrete.