This guy was training for a championship and had tried all he could. He thought he was ready till he met this tough mistress. She deconstructed his training and began training him afresh. To prove to him that he knew nothing, she choke held him and sleeper held him and dared him to break free. He could not and he realized he still had a lot to learn for him to win the championship.
This mistress did not like how her slave talked to her. She had to teach him a lesson he would never forget and she did it. She did it by strangling him so that he could realize she held all the cards. She used her knee to do it and it was extremely painful besides him nearly choking to death. From then on, they never had any issues as the slave knew his place.
This guy had this mistress' debt and he had refused to pay it. She followed him to the gym and made him pay her. He did not know she was tough so it took her by surprise when she choke held him and brutally used her martial arts skills on him. She held him in sleeper hold he could not break free from and he had to beg her to let him go.
Mistress Anna wanted to choke her slave to get some sense into his head. She wanted to send a message that she was fed up with his bull shit and she would not allow it any longer. She went to his room and found him lying on his bed. She then used her feet to strangle him till he begged for mercy and apologized for all the wrongs he had ever done.