Check out this new documentary-style video that captures Brooks runner Gabriele Grunewald’s positivity, strength and determination as she battles cancer for the fourth time in her life. The 31-year-old former University of Minnesota standout and current professional 1500-meter runner competed in the U.S. outdoor track championships in June while undergoing treatment for adenoid cystic carcinoma. (The video is also being shown at select running stores around the U.S. in August.)