Is there a style of Martial Arts that requires a person to be double-jointed or is performed better if double-jointed?
https://www.youtube.com/watch?v=njWL8woekB8
You must watch to get the range of mobility possible.
Lockration Ronda Rousey in the process of making Sarah Kauffman double-jointed.
This commentary remark suggest that the fighter on her back is being put into a hold that over extends her joint.
Would double-jointed ability make a person immune to certain holds or perform holds that others cannot?
(fcfighting.com) http://lockration.blogspot.com/2013/02/looking-for-fight-ufc-157.html