Why is it important for both parents to lead a healthy lifestyle before conception?

The parents should have a good lifestyle before the thought of a baby comes in mind. You don't want to plan on changing your living location and your job when you have a baby due in months. If you have a lifestyle that isn't good for a child change your lifestyle before the baby is conceived. You don't want your precious little baby girl hanging around drunken bikers. Not good, be prepared for the baby!