Dean

Dean, Josh, and Ben Court. "THE FITTEST MEN ON EARTH." //Men's Health// June 2010: 136-138. //Student// //Research Center//. Web. 14 Sep. 2010. []. "In most countries, soccer is the number one sport. Imagine if all the athletes in the NFL, the NBA the NHL, and MLB played soccer." "In no other sport do men run for so long, at such intensity, with so little rest, all the while being asked to excel at so many things: sprinting, jumping, cutting, tackling, and of course, dribbling a slippery, round ball with such skill that it seems to be tethered to their feet by a string." "Soccer players are the world champions of intermittent exercise," says Peter Krustrup, Ph.D., an associate professor of exercise and sport sciences at the University of Copenhagen." "It's the combination of intense interval exercise with various activities requiring cardiovascular fitness and muscle strength."  "Elite soccer players have extraordinary intermittent exercise ability, high sprinting and jumping ability, and high endurance."