What generates the temperature of human body?

Basal metabolic rate (BMR)

The basal metabolic rate (BMR) is the rate at which the body uses energy when at rest. It accounts for about 60-70% of the total energy expenditure of a person. The BMR is determined by several factors, including:

* Body size: Larger people have a higher BMR than smaller people.

* Muscle mass: People with more muscle mass have a higher BMR than people with less muscle mass.

* Age: The BMR decreases with age.

* Sex: Men have a higher BMR than women.

Physical activity

Physical activity increases the body's energy expenditure. The amount of energy expended during physical activity depends on the intensity and duration of the activity.

Other factors

Other factors that can affect body temperature include:

* Environment: The body's temperature is affected by the temperature of the surrounding environment.

* Hormones: Hormones such as thyroid hormone and estrogen can affect the body's temperature.

* Illness: Illness can cause the body's temperature to rise.

The body's temperature is regulated by a complex system of mechanisms that work together to maintain a constant internal environment.