@people: A 24-year-old woman in “perfect health” collapsed while running her first marathon, and died later that night. #RachelApa, an athlete and former hockey player for Bucknell University, was running her first marathon, the #NewYorkCityMarathon, on Nov. 1 when she collapsed. Her cause of death was a life-threatening condition often associated with over-exertion: rhabdomyolysis, or muscle breakdown. Dr. Sohaib Imtiaz, Chief Medical Officer at People Inc., explains how this can happen. Read more in our bio link.