I loved reading 'What Doesn't Kill Us', and have been thinking about doing one of the week-long expeditions with Wim Hof. Did you do any prep before going on th

I loved reading 'What Doesn't Kill Us', and have been thinking about doing one of the week-long expeditions with Wim Hof. Did you do any prep before going on the trip, or was it your first experience with his breathwork?