Life-threatening "heat dome" expands across East Coast

A life-threatening heat dome is building over the central and eastern U.S. through the July 4 holiday weekend and is expected to bring days of extreme and record-breaking temperatures to more than 230 million people. Dr. Heather Hinshelweood of the Fraum Center for Restorative Health joined LiveNOW from FOX's Stephanie Coueignoux to discuss the best ways to protect your health in the heat.