AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new featuresNFL Sunday TicketπŸƒβ€β™‚οΈπŸ’¨ The Science Behind the Sufferfest: My Hyrox Takeaways As a Hyrox finisher who loves digging into the data, I always suspected the run was the real sile...