In the past few years, researchers have discovered that, like khakis at the Gap, fat comes in many different shades—each with unique molecular properties and health implications. From reddish brown to beige, fat is more complicated than we might think. What does the fat rainbow mean for you? Here’s everything you need to know.
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Brown adipose tissue (BAT) is found in the back of the neck, and serves to convert food to heat. It acts like a muscle when stimulated by cold environments, burning calories for fuel. An adult of normal or below-normal weight naturally stores about 2–3 ounces of brown fat—enough to burn 250 calories over the course of three hours when stimulated. As for standing in a cold shower to lose weight, it could work, but “shivering yourself skinny” has yet to be proven effective.
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