The Importance of Cold Water Immersion

The paper that everyone used to cite is a study by Susanna Soberg and it was a really good clever study, but that doesn't mean that its conclusions support cold plunging. Over 24 hours, the group that did the freezing cold water plunge burned about 500 more calories than the group thatdid the normal water cold plunge. And then everybody started saying, well, what about brown fat? There was a mechanism in the study that showed that it increases brown fat. But we don't really know much about brown fat in the real world. Theoretically, it's really healthy to have more brown fat, but a lot of the best athletes in the world have very low levels of brown