Energy homeostasis is the process by which the body maintains a stable internal environment for energy balance. This involves regulating the intake of food and the expenditure of energy through activities and metabolic processes. The body uses hormones, such as insulin and leptin, to communicate energy needs and storage levels. When energy intake exceeds expenditure, the body stores the excess as fat, while a deficit leads to the use of stored energy. This balance is crucial for overall health, affecting weight, metabolism, and the risk of conditions like obesity and diabetes. Maintaining energy homeostasis supports optimal functioning and well-being.