http://www.groundfighter.com/ - World Muay Thai Champion Duke Roufus, widely considered to be one of the most technical heavyweights of all time, shares his personal knowledge of Muay Thai gleaned from extensive training in Thailand and as coach of the legendary Roufus Kickboxing Team. Here Duke demonstrates the debilitating Step Knee technique from his Muay Thai Elbows, Knees And Inside Fighting Volume. Clear and concise teaching on the devastating Muay Thai techniques taking Mixed Martial Arts by storm.