Burns food to figure out how many kcals a food provides

Prompts a person to eat or to not eat

Body's physiological response to a need for food triggered by nerve signals and chemical messengers (primarily originates in hypothalamus)

During meal, hunger diminishes and says "stops eating"

After a meal, "dont start eating again"

Causes carb craving, initiates eating, increases energy expenditure, increases fat storage. favors weight gain.

Generation of heat that is released whenever body breaks down nutrients for energy and when energy is used to do work, can be measured to determine the amt of energy expendedthree categories: 1)-Energy expended for basal metabolism 2)-Energy expended for physical activity 3)-Energy expended for food consumption