In a couple of other threads Fellow MT member Dancingalone has articulated he doesn't believe as many (if not any) TKD Schools do not partake in 'body hardening' exercises. Myself being a 'ol School TKD'ist, knows quite a few of these conditioning exercises, and drills Such As: Alternating knife strikes, ans inside low blks-followed by outside low blks (the whole time making bone to bone contact with you partner) Then there is the makiwara training for fist and hand conditioning (I also use the makiwara on the floor- for the back of my heel. I know there are of plenty others out there. Can we start a discussion on some of the things you do. Dancingalone, Terry, Exile, Stuat, Simon, Bluekey, Iceman, Kacey or anybody who has something to suggest and why that particular exercise.