I was invited to try out the famous Wim Hof method created by "Iceman" who has multiple Guinness records related to extreme cold. I didn't have to go to "extreme cold" but going into water at 40°F/°4C was still not an easy feat. The seminar was lead by Zilvinas Gruodis with whom we later spoke about the Wim Hof method, beating your fears, martial arts and more.

Learn more about him at the official Wim Hof method website: https://www.wimhofmethod.com/instructors/zilvinasgruodis