In this activity about the relationship between food and energy (page 8 of PDF), learners estimate average daily baseline energy (Calorie) needs and energy needs for different levels of activity. Learners will calculate how many Calories a typical teenager needs every day, known as Basal Metabolic Rate or BMR, as well as their own baseline Calorie needs based on gender, age, height, and weight. Learners will calculate this using the Harris-Benedict Equation. This guide includes background information, setup and management tips, extensions, and handouts.