I wonder if this mud has a high sulfur content, as the one time that I soaked in a natural mud spa, I had to dispose of my swimsuit and the clothes that I wore later that day since not even the laundry could get the smell out. Despite all of that, I would absolutely soak in the mud again since it felt great!

Marko Djurica / Reuters
People bathe in mud in the village of Ovca near Belgrade, Serbia, Aug. 21. In the 'Ovcanska Spa' the water is salty and comes from the depth of several hundred meters with high mineral content. Locals believe that various vein diseases, rheumatics, sciatica, and vision disorders are treated by the curative mud and mineral water that contains more than 28 minerals.