Brown & beige fat at work. Kian loves the water. Cold water does not seem to bother him in the slightest. That water is 🥶. (I did not want to just hang out in that pool) Mitochondrial dense adipose tissue keeping him warm. Babies are born with lots of it. The type of fat we all want more of. Not going to be the case unless you get uncomfortable and deliberately challenge your body’s thermal regulation. 🧊 🥶 ❄️