| A | B |
|---|
| nutrition | the science that studies the substances in food and how the body uses them |
| nutrients | substances in food that your body needs |
| carbohydrates | the main source of energy for your body |
| fiber | the tough, stringy part of raw fruits, raw vegetables, whole wheat, and other grains, which you cannot digest |
| proteins | essential for the growth and repair of all the cells in your body |
| fats | another source of energy that carries certain vitamins in your bloodstream and helps keep your skin healthy |
| vitamins | substances that help regulate body functions; like helping your body use other nutrients and fight disease |
| minerals | elements in foods that help your body work properly |
| food pyramid | a daily guideline to help you choose what and how much to eat to get the nutrients you need |
| calcium | a mineral that helps your body build healthy teeth and bones; also important for muscle function |
| saturated fats | are fats found mostly in animal products like butter, meat, milk, and egg yolks |
| cholesterol | a waxlike substance our bodies produce and need in small amounts |
| sodium | a mineral that helps control the amount of fluid in your body |
| calorie | a unit of heat that measures the energy available in foods |
| anorexia nervosa | an eating disorder in which a person has an intense fear of weight gain and starves himself or herself |
| bulimia nervosa | an eating disorder in which a person repeatedly eats large amounts of food and then purges by vomiting or using laxatives |
| physical activity | any kind of movement that causes your body to use energy |
| strength | the ability of your muscles to exert a force |
| endurance | how long you can engage in physical activity without becoming overly tired |
| aerobic exercise | rhythmic, nonstop, moderate to vigorous activities that work the heart |
| anaerobic exercise | intense physical activity that requires short bursts of energy |
| flexibility | the ability to move body joints through a full range of motion |
| physical fitness | the ability to handle everyday physical work and play without becoming tired |
| exercise | planned, structured, repetitive physical activity that improves or maintains physical fitness |
| warm-up | some gentle activity that prepares your body for exercise |
| cool-down | some gentle activity to slow down after exercise |
| target pulse rate | the level at which your heart and lungs receive the most benefit from a workout |
