Getting in shape, by working your abdomen, legs, thighs and buttocks, as well as moisturizing the skin to maximize elasticity, are great ways to prepare the body for pregnancy and childbirth. Yoga is also beneficial for preparing the body as well as the mind. Your physician will probably want you to take a prenatal vitamin; you may as well get your physical, and start asking about the vitamins. Maintain a nutritious and varietal diet, complete with beans and rice, green leafies, fruit and nuts. These changes will promote optimal conditions for a baby to grow.