From Inside Edition.

This teen cross country runner passes out over and over again after finishing her races. Inside Edition spoke to 17-year-old Jewel Gannon. The problem is so severe, she started asking people to try to catch her at the finish line. Just last year, the teen from South Dakota passed out 18 times. Gannon was recently diagnosed with POTS, a condition that causes heart palpitations and dizziness. Inside Edition spoke with Maimonides Health neurologist Dr. Leah Kroll.