Basal metabolic rate (BMR) represents the minimum amount of energy expended by an organism at rest to maintain essential physiological functions such as respiration, circulation, and cellular maintenance (Painter, 2005). It serves as a fundamental indicator of an organism's metabolic activity and is influenced by various factors including age, sex, body composition, and environmental conditions. BMR plays a crucial role in energy allocation strategies, influencing an organism's ability to survive and reproduce in its environment.