Isabella want to make sport and also improve her slave's fitness.
He is lazy on the mat (like ever), he needs more fitness and also some punishment because he's so lazy.
Isabella steps on his hands, now he should lift her up.... and failed... why? she's to heavy? or he's to weak?
A lady is never to heavy, if you think this you need punishment!
Harsh body trampling and head-face stepping follows....
This slave is only good for punishment actions ;-)