RMR stands for Resting Metabolic Rate, which is the amount of energy (measured in calories) that the body burns at rest to maintain its vital functions. It is also known as Basal Metabolic Rate (BMR). RMR is the minimal energy required to maintain basic life functions such as breathing, heart rate, and body temperature. It accounts for 60-75% of the total energy expenditure in a day, and it is determined by factors such as age, sex, weight, height, muscle mass, and body composition.
RMR can be measured using a variety of techniques, including indirect calorimetry, which measures the amount of oxygen consumed and carbon dioxide produced, and bioelectrical impedance analysis, which estimates body composition by measuring resistance to a small electrical current.
Knowing your RMR can be useful for understanding how many calories you need to maintain your weight, as well as for developing a personalized nutrition and exercise plan.
It’s important to note that RMR is an estimate, and it can be affected by a number of factors such as changes in weight, muscle mass, and body composition. Additionally, RMR can be influenced by factors such as stress, illness, and medications, and it can vary throughout the day.