This weekend, 28-year-old Josh Kerr ran a mile in just three minutes and 42.66 seconds. Now, scientists have revealed the secret to Kerr's incredible success.

The storied men’s mile record in track that has stood for 27 years will come under attack Saturday from Britain’s Josh Kerr.

Hicham El Gerrouj’s 27-year-old record stands at 3:43.13, and in London, Kerr will aim to beat it