The world of sports abounds with magical records that no-one-believed-would-ever-be-broken. Consider New York Yankee Lou Gehrig’s grueling mark of 2,130 consecutive baseball games played, which stood tall for 56 years: Cal Ripken, Jr. smashed it by playing in 2,632. Or Hank Aaron’s 1976 career home run record of 755. Insurmountable! Until Barry Bonds passed it in 2007. Leonidas of Rhodes’ 2,168-year-old mark of twelve individual Olympic titles? Unbeatable! Until Michael Phelps churned right by to capture his 13th individual gold medal last year in Rio.