BMR (Basal Metabolic Rate) plays a critical role in weight management as it represents the amount of energy expended while at rest. Understanding one’s BMR helps individuals estimate their daily caloric needs, guiding them in creating effective diet and exercise plans. A higher BMR indicates faster metabolism, which can be beneficial for weight loss or maintenance. Tracking changes in BMR due to factors like muscle gain or aging can aid in adjusting dietary intake and activity levels for sustained weight control.