collar bone-I´ve heard about it and I´ve got the impression that it is a good target area.Easy to break and makes opponent´s arm go limp if broken.
I´ve also heard that it´s useles against a bigger/stronger opponent,it is also usually covered with clothes and hard to go for (which is my own idea)
ribs-Yeah.I´ve never understood it.
It is used /taught very much.
But as far as I know,ribs are a strong area,that is why they are protecting your lungs and heart (critical organs) so why are they considered a target area? (As there are such unprotected areas as solar plexus and liver near them) I guess it could be used as atemi (a strike to -in this case- " " vulnerable area used to take body off one´s mind)
Sternum-I speak english as a second language of mine,but I have no idea what this area is,where it is located and how it works (if attacked)
spine-As far as I know,there is one weak place in it but in other words…no idea.
Atemi again?
thigh-inside of thigh is good for grabbing/pinching or (in some cases) kicking,but what about using thigh as a target when there are knees and shins?
All responses welcome.