So, what are these vulnerable points? Here is a short list: Eyes, Nose, Jaw, Chin, Throat, Groin, Thigh, Knees, Shin, Top of foot... Yes, there are more!
Here are some examples of defenses involving striking vulnerable points.
|Choke defense with knee strike to groin|
|Eye gouge defending vs bear hug.|
|Choke defense with palm strike to chin|
|Bear hug: Elbow strikes to chin/jaw/temple|