Your BMR rises after you eat because you use energy to eat, digest and metabolise the food you have just eaten. The rise occurs soon after you start eating, and peaks two to three hours later.
What causes an increase in metabolic rate?
In an average man under resting conditions, heat production is of the order of 50 W m−2 body surface area or 80 W total, but increases of metabolic rate occur because of food consumption, exercise and other factors. In addition, an increase in metabolic rate is found when there is a rise of body temperature.
What stimulates metabolic rate?
The basal metabolic rate of the body is controlled by the hormones T3 and T4, produced by the thyroid gland in response to the thyroid stimulating hormone (TSH), produced by the anterior pituitary.
