Justine Carter didn't know she had SCAD — a heart condition with no known cause or risk factors — which can strike at any time in otherwise healthy people

In May, Justine Carter’s casual treadmill workout resulted in a shocking near-death experience, with the 33-year-old experiencing a heart attack 12 minutes in. At first, she started having shortness of breath, then a pain in her back extended to her chest, and moments later she began violently vomiting.

A Utah mom, 33, experienced a potentially deadly heart attack while working out on the treadmill. Justine Carter shares the scary experience and offers warnings for other women.