You breathe in. You breathe out. But what's happening inside? Watch this movie and find out!
Want to see more movies, quizzes, and activities about the body?
More Information
For a full list of Rady Children's Programs and Services, click here or call Rady Children's Customer Service and Referral Center at 1-800-788-9029 for more information.
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.