Introduction to Exercise

Five people in a yoga studio doing a yoga pose called three-legged dog: both hands are on the mat, head is down, one foot on the floor about a yard behind the hands, the other foot is extended straight up in the air.

If you are in a bad mood, go for a walk. If you are still in a bad mood, go for another walk.

—Hippocrates, Greek physician


By the end of this section, you will be able to:

  • Describe physical fitness and the major types of exercise
  • Identify the benefits of regular exercise, for both body and brain


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