In the Heilstollen, a little water drips whisperingly onto the floor from time to time, otherwise you hear nothing. You breathe the purest air that the rock has washed for you. Or you rest completely within yourself, mindful of your yoga posture. Perhaps in a softly lit room, perhaps even outside under the trees. You float in the warm brine water. You are light, you are weightless. Or you step into the ice-cold Kneipp pool. Your skin tingles, your heart vibrates. In all this, you do nothing else - except everything for yourself.