Answer: TEF is the cost associated with the body's utilization of the foods a person eat.
Explanation:
Thermal effect of food can be defined as the increase in energy expenditure above the basal metabolic rate as a result of the cost of processing food for use and storage. The production of heat by brown adipose tissue which is activated after consumption of a meal is an additional part of dietary induced thermogenesis. The thermic effect of food (TEF) is one of the parts of metabolism together with the resting metabolic rate and the exercise compartment. A widely used estimate of the thermic effect of food is about 10% of one's caloric intake, and the effect varies greatly for various food components. For instance, dietary fat is normally easy to process and has a low thermic effect, while protein is hard to process and has a greater thermic effect.