Final answer:
The basal metabolic rate (BMR) is the total energy conversion rate of a person at rest. It is the rate at which the body uses food energy to sustain life and perform basic functions, such as heart rate, respiration, and kidney function, while in a neutrally temperate environment and in a postabsorptive state.
Step-by-step explanation:
The basal metabolic rate (BMR) is the total energy conversion rate of a person at rest. It is the rate at which the body uses food energy to sustain life and perform basic functions, such as heart rate, respiration, and kidney function, while in a neutrally temperate environment and in a postabsorptive state. BMR is influenced by factors like age, gender, total body weight, and amount of muscle mass.