Dr. Mark Cheng is the creator of K3 Combat Systems. He is an author and a contributing editor for Black Belt Magazine. Mark has been involved in numerous martial arts for most of his life. I hope you enjoy his story. Learn more about Mark on his website. Homepage – Dr Mark Cheng – Move … DR. Mark Cheng – K3 Combat Systems – Ep22
Jon Engum is a 7th Dan Kukkiwon Certified Taekwondo Grandmaster with over 40 years experience practicing and teaching Taekwondo. He own and operates Engum’s Academy of TaeKwonDo in Brainerd, MN. Jon is currently the president of the Minnesota Tae Kwon Do Association. Jon is the author of the Flexible Steel and Trembling Shock books, Creator and Chief Instructor of the … Jon Engum – Tae Kown Do Master, Kettlebell & Flexibility Expert- Ep16
