Have you ever wondering what happens to the victims of BJ Penn when they rear the point of being choked unconscious? Holding five victories via rear naked choke in his illustrious career, it was signature submission of former two division champion in the UFC and on an episode of ESPN’s Sports Science ‘The Prodigy’ had his chokes put to test.

After the initial test which showed BJ Penn generating 5lbs of force to put an opponent to sleep and a further 163lb of force if he squeezes without any regard whatsoever, Sports Science’s John Brenkus decided to put himself on the line to see what would happen to his body when he is being choked unconscious.

Getting hooked up with an fNIR Sensor which detects his blood flow in his frontal cortex, an ECG which will relay the electrical activity in his brain and finally a heart rate monitor will give an output of his repertory rate, John was ready to feel the choking power of one of the greatest fighters in mixed martial arts history.

After being put sound asleep, John regains his senses though clearly confused. Did I get choked out?

After reviewing the data, the results were staggering, taking all but nine seconds to choke him completely unconscious, limiting his oxygen flow in his carotid artery and 8.2 million neurons of the frontal cortex temporally stopping, affecting his short term memory.

About BJ Penn:
Jay Dee “B.J.” Penn (born December 13, 1978) is an American professional mixed martial artist and Brazilian Jiu-Jitsu practitioner. Prior to fighting for the UFC, he became the first American Gold medalist of the World Jiu-Jitsu Championship. In mixed martial arts, Penn has competed in the Featherweight, Lightweight, Welterweight, Middleweight, and Heavyweight divisions. As a former UFC Lightweight Champion and UFC Welterweight Champion, he is only the second fighter in UFC history to win titles in multiple weight classes.