Is it Possible to Hold Your Breath for 20 Minutes?

Competitive breath-hold divers can squeeze ten, fifteen, even twenty minutes out of a single lungful of air. How do these divers do it and how can you train to hold your breath for longer?

March 13, 2014
3:00 PM EDT
French freediver Guillaume Nery practices off Nice before attempting to set a world record of constant weight freediving at -109m. | Corbis
French freediver Loic Leferme prepares and practices with the goal of attempting to set a new no limit apnea world record in 2004. | Corbis