Brown Adipose Tissue 101 — Cold Exposure Science Explained | 2026
Brown Adipose Tissue 101 — Cold Exposure Science Explained | 2026 Something strange has been happening in wellness circles over the last few years. People are deliberately sitting in ice baths, finishing showers with blasts of cold water, and sleeping in cool rooms — not because they enjoy the discomfort, but because they've heard it does something meaningful to their metabolism. Something involving a type of fat most of them couldn't have named two years ago. Brown adipose tissue. Brown fat. The term started trickling out of research settings and into podcast conversations, wellness newsletters, and workplace health programs with a speed that outpaced most people's ability to actually understand what it is, what it does, or whether the cold exposure trend built around it has any biological grounding worth paying attention to. Some of it does. Some of it is the wellness industry doing what it always does — taking a genuinely interesting piece of biology, extracting...