Thermogenesis is the process by which the body generates heat, primarily through metabolic activity. This process helps maintain body temperature, especially in cold environments. There are two main types of thermogenesis: shivering thermogenesis, which occurs when muscles contract to produce heat, and non-shivering thermogenesis, which is mainly facilitated by brown adipose tissue that burns calories to generate heat. In addition to maintaining temperature, thermogenesis plays a role in energy expenditure and weight management. Factors such as diet, physical activity, and environmental temperature can influence thermogenic activity. Certain foods, like spicy peppers, can also temporarily boost thermogenesis, leading to increased calorie burning.