Your body does some amazing things, so why not put it to the test? Check with a grown-up before trying any of these experiments. Some will require help from an adult.
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
Images provided by iStock, Getty Images, Corbis, Veer, Science Photo Library, Science Source Images, Shutterstock, and Clipart.com