An inspiration to us all

At 69 Keith is a real inspiration to me every time we train,here were working some internal punching to improve the explosiveness of his palm heel,hes using his kinetic chain to build power,the internal part refines the finish of the strike and makes it more precise and more explosive,its for self defence so his hands are at different positions and not in a guard etc like for sport. there's a little comparison on speed v power at the end