John Brenkus

What's the fastest a human can run the 100-meter sprint? What's the longest a human can hold his breath? What are the limits of human performance? Until 1954, common wisdom and scientific knowledge considered a sub-four-minute mile an impossible feat--but today the world record stands at 3 minutes, 43 seconds. Records are a mark of how well people have done, not how well they can do. What's the actual limit? In this thought-provoking book, John Brenkus,...