The researchers said that because air conditioning and heating
give us constant, 64 (comfort) temperatures, our body's need for brown fat has
decreased. They found that:“Outdoor workers in northern Finland who 65 (expose) to
cold temperature have 66 significant amount of brown fat when 67 (compare) to
same - aged indoor workers.” The research was conducted on two different control groups of
mice. 68 group was injected with the protein that helps create brown fat. This group
later gained 30% less weight after both groups were fed high - fat diets.