Brown adipose tissue (BAT) is a type of fat found in the body that is primarily responsible for generating heat. Unlike white adipose tissue, which stores energy, BAT contains a high number of mitochondria, allowing it to burn calories and produce warmth. This process is especially important for maintaining body temperature in cold environments. BAT is most abundant in newborns and hibernating animals, but adults also have small amounts, typically located around the neck and shoulders. Research suggests that increasing BAT activity may help combat obesity and metabolic disorders by enhancing energy expenditure and improving overall metabolic health.