Here's the scoop: Your body isn't yours alone anymore. Now you've got another person growing inside of you — and this tiny life depends on getting its nourishment and growth support from everything you put into your body, as well as from everything you do to keep it healthy and well. That's why diet and exercise are so critical. Your doctor will tell you exactly how much exercise you can (or should) do throughout your pregnancy, but you can start right now with healthier eating habits!