Lynne Cox is an open-water swimmer and elite athlete who is able to endure cold water temperatures, without a wetsuit, that would kill others. She has broken many world records and has participated in research at the University of London as scientists tried to make sense of her extraordinary capabilities. In the midst of all her accomplishments she cared for both of her elderly parents, both of whom were ill for a long time. When they passed away in quick succession, followed by the death of her beloved Labrador retriever, Lynne was in shock from loss and loneliness and was literally suffering from broken heart syndrome. Diagnosed with atrial fibrillation (AFib), the athlete who could do it all had to learn how to deal with her illness, her recovery, and her slow path back to health.