Losing your battle with cancer in your thirties may seem like a life never fully lived. And yet Gabriel Grunewald, the American track star, used the last 10 years of her life to show women, runners and the world that you can be both brave and make every day you have count. Grunewald was first diagnosed with adenoid cystic carcinoma, a cancer found in the salivary glands, in 2009. She went through surgery and radiation that summer, but fought back to finish second at the NCAA outdoor track and field championships. That summer she took 10 seconds off her 1500m PB, running 4:12.06 in Belgium.