High-risk OB-GYNs Dr. Laura Riley and Dr. Dena Goffman debunk 13 myths about childbirth. They explain what your water breaking really means, if you should eat the placenta, and how long labor lasts. They also talk about when you should get an epidural — plus how getting one does not increase your risk of needing a C-section.br br Riley is the chair of obstetrics and gynecology at NewYork-PresbyterianWeill Cornell Medical Center. You can learn more about her work here: br Goffman is the chief obstetrician at NewYork-PresbyterianColumbia University Irving Medical Center.