Answer:
Brown fat cells are present in our body which helps in regulating the body weight. The main role of brown fat is to produce heat when the temperature of body is going down or when we are feeling cold. They burn energy in order to produce heat and burning energy comes from white fat which can be translated into weight loss. This is how the brown fat helps in weight management.
The brown fat is activated by cold temperatures and it helps our body fast our metabolism by providing heat by burning energy.