Clip
Wim Hof explains how he manipulates his body temperature during cold-water immersion
“In a scientific experiment, Wim Hof immersed himself in an ice bath for 80 minutes and was able to raise his core body temperature. Researchers collected blood samples from him and showed a dramatic change in immune-related cytokine levels. In this clip, Wim Hof describes the experiment in which scientists first discovered that his techniques were having a physiologically unexpected effect.”