Metabolic rate refers to the rate at which the body converts food into energy. It is crucial for maintaining essential bodily functions such as breathing, digestion, and circulation. Factors influencing metabolic rate include age, gender, muscle mass, and hormonal balance. A higher metabolic rate indicates that the body burns calories more efficiently, aiding in weight management and energy levels. Understanding one's metabolic rate can assist individuals in tailoring dietary and exercise plans to optimize health and performance.