Chapter 15

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Across
  1. 5. Aerobic activities are especially good for building _____________ fitness
  2. 7. Warming up prepares your heart and other muscles for ________
  3. 8. Burning muscles and feeling as if you cannot catch your breath are signs you are working _______ hard
  4. 9. Variety can help keep an exercise program __________
Down
  1. 1. The heart beat of an athlete is ________ because it can work more efficiently
  2. 2. refers to your ability to use a group of muscles over and over without becoming tired
  3. 3. A heart rate can be measured on the ________ or neck
  4. 4. Exercise can positively affect your appearance by altering your __________, movement, and weight
  5. 6. Three factors that are involved in gaining physical fitness are: frequency, __________, and duration