Prosecutors called a Marine veteran who gave Daniel Penny martial arts instruction to ... He also said that while Marines are told not to hold a choke for more than five seconds, it does not ...

Penny's Marine Corps martial arts instructor, to the stand. He testified Penny attained a green belt. During training, he said warnings are given not to hold a choke longer than five seconds.

Objective: To identify the most salient medical issues that may be associated with mixed martial arts competition by determining the ... 91 (14.1±2.7%) because of neck choke, 83 (12.9±2.6%) because of ...

Being stuck on the bottom side control is one of the most unfavorable positions in Brazilian jiu-jitsu, as it forces most grapplers to be on the defensive.