156 Copyright Goodheart-Willcox Co., Inc. 101akarca/Shutterstock.com Chapter 9 Staying Active and Managing Weight Objectives After studying this chapter, you will be able to • list factors that affect your energy needs • describe the types and amount of physical activity recommended to promote physical fi tness for someone in your age group • identify nutrition concerns of athletes and suggest strategies for addressing those concerns • examine factors that contribute to weight problems and eating disorders and • explain the philosophy behind weight management. Reading Prep Read the chapter title and tell a classmate what you have experienced or already know about the topic. Write a paragraph describing what you would like to learn about the topic. After reading the chapter, share two things you have learned with the classmate. Content Terms basal metabolism kilocalorie physical fi tness cardiorespiratory fi tness Physical Activity Guidelines for Americans (PAG) aerobic activity hydrate dehydration weight management body composition body mass index (BMI) healthy weight overweight underweight obesity waist circumference eating disorder anorexia nervosa bulimia nervosa binge eating disorder Academic Terms ambitious detrimental regimen disparate