Human beings have developed large brains to give us a leg up as a species. But a big brain means a big head, and a big head makes getting a baby out during birth difficult. Vaginal birth can lead to a weakening of the pelvic floor in a minority of women. Age and other factors also can weaken the structure and cause complications. In fact, one in five American women will undergo pelvic floor surgery to repair damage. Dr. Kirtly Parker Jones sits down with urogyneocologist Dr. Ingrid Nygaard to talk about what women can do to keep their pelvic floor strong and how a new study at the U is looking into how women can rebuild pelvic floor strength after childbirth.