Good Ol’ Fashioned Self-Defense: How to Choke Someone Out (aka the Sleeper Hold)This entry was posted in Science! Smart Shiz Talent Useful Shiz and tagged blood circulation to brain cutting off blood flow guide how to pressure point rear naked choke self defense sleeper hold tutorial on July 18, 2016 by almeida Protip: do not practice on little sister … she may not wake up.