Brutal Kicking Workout

The slave will have to assist me today - I want to improve my kicking abilities and therefore order him to stand in front of me - so I can kick his body - with my brutal trailrunning shoes! I know the vicious tread of the shoes will hurt him massively and each kick leaves behind a nice imprint on his skin. I mix in some knee kicks and order him to get back up after each kick quickly. When he doesnt get up quickly enough, he has to kneel and I kick his belly from below! When he isnt even able to get back on all fours, I just kick him over and trample him for a little while - until hes getting up again. Later I take off the shoes and continue to kick him with my bare feet.