We know that movement is medicine, and that's especially true for expecting mothers. Daily exercise can be a game changer for moms-to-be, but with so much mixed advice out there, it's hard to know what's safe, how much exercise is okay, and what benefits you can expect. Martie Nightingale, certified nurse midwife who also holds certification in menopause lifestyle medicine and prenatal mental health at Intermountain Health, shared what to do and what to avoid when you're pregnant.