This class teaches you to breathe a little better into those spaces that the baby occupies. The air you take in makes its way to the baby through the placenta and umbilical cord, and carbon dioxide is removed when you exhale. The more you breathe, the better for you, and your baby. You may wish to sit on a bolster or Birth Ball for this prenatal yoga class. Note: to learn how to make your own bolster at home, click here.