What is the difference between BMR and RMR?

Basal Metabolic Rate (BMR) refers to the number of calories your body requires to maintain basic physiological functions while at complete rest in a controlled environment, typically measured after a full night's sleep. Resting Metabolic Rate (RMR), on the other hand, is the number of calories burned while at rest but can be measured under less strict conditions, such as after a short period of inactivity. Generally, RMR is slightly higher than BMR due to additional energy expenditure from digestion and other bodily processes. Both measurements are used to estimate daily caloric needs, but they differ in their testing conditions and the precise metabolic state of the individual.