wim hof breathing example scientific lab results HD

this is a video from a study referenced by wim hof about how he training people to withstand the effect of some toxin. i foget where i found it but its not easy to find so ill put it up. so this is a student trained by wim along with various measurements performing the breathing technique that led to the improved toxin response. pretty straightforward. i dont know why she breathes in only through her nose. but the oxygen numbers are pretty amazing original file name is pnas.1322174111.sm02.avi