This was at Haikko Manor in Finland, years ago. I just happened to visit a spa which had such a possibility. It was not for medical purposes for me, but nevert

This was at Haikko Manor in Finland, years ago. I just happened to visit a spa which had such a possibility. It was not for medical purposes for me, but nevertheless there was a very relaxed feeling (like that from ice swimming), which lasted for many hours afterwards.