Taking full advantage of your hip joint. It is a hip joint that is not very conscious in everyday life, but it can exert tremendous power when used well.
That is very good , I didn't know that you see I learned something I will never would have known that , and I've been in the martial arts for close to five decades you see everybody knows something other people don't , and in the martial arts or any learning you never stop learning there's always something new ! Domo arigato !