I'll sum this up, make it pretty simple. I cannot kick with my foot, if i make contact with any other part of my leg than the flat of my shin it hurts soooo much. Yet I see guys like Cro Cop who are using alot of force behind head kicks, that land with the foot. Why is that, and how does that happen without breaking your foot? I was sparring today and landed with some of my foot and I can hardly walk.