I have a very good friend who recently found out she is pregnant, and she is interested in natural birth. However, her doctor is discouraging her (surprise, surprise), and citing her weight as the reason. He told her something like, "Your weight is going to cause fatigue during labor and you'll not make it through without medication." Even though she's early in pregnancy, she doesn't appear to have any unique issues or risk factors (like GD, hypertension, etc.) that would otherwise prevent her from pursuing this route. She's going to meet with my doula soon, and doing some more research. Any resources you guys can suggest?