Cryotherapy Chamber Frankfurt: The South African swimming world champion and superstar Chad le Clos is now preparing for the 2024 Olympics in Paris in the -110°C cryotherapy chamber at doctorfrost. Chad le Clos won the 200m butterfly event at the 2012 Summer Olympics in London, dethroning Michael Phelps. The following year, he became the world champion in the 100m and 200m butterfly events.