By learning to dunk a ball at the age of 34, journalist Asher Price investigates the limits of his potential--and our own. We all like to think we can run faster, pick up another language, or cook a souffle. But very few of us ever really test ourselves. Seizing upon the dunk, which is richly freighted with distinctly American themes of culture, race, and upward mobility, Price asks: How much of our story do we weave with our own hands? The dunk mesmerized Asher Price as a child, but even with his height (six foot plus) and impressive wingspan, he never really pushed himself to try it. Now, in this entertaining book of science journalism, Price spends a year remaking his body and testing his mind as he wonders, like most adults, what talent he has left behind. A shadow narrative emerges about Price's own past as a cancer survivor. Learning to dunk takes Price down all sorts of avenues--biology and physics, race and gender, and, briefly, the history of one of sport's lightning moves. It forces him to ask some fundamental questions about human ability and the degree to which we can actually improve ourselves, even with great effort.