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?

Welcome to The Perfection Point.

Until 1954, common wisdom and scientific knowledge considered a sub-four-minute mile an impossible feat for a human. But then Roger Bannister broke that mark, followed quickly by a host of other athletes. Today the world record stands at 3 minutes, 43 seconds, yet even that number doesn't tell the full story of how fast humans can run a mile—records are a mark of how well people have done, not how well they can do. What's the actual limit? The answer lies in The Perfection Point.

In this fascinating and thought-provoking book, John Brenkus, the host, co-creator, and executive producer of ESPN's Sport Science, ventures across the sports world to provide an in-depth look at the absolute limits of human performance. Beginning with the...