K3 Martial Arts is a well known karate academy situated at Roseville, CA. Doyle McMahan is the head instructor of this academy. He started his training in martial arts when he was only 7. He was so talented that he earned a black belt at 12. Since then, his main focus was on martial arts only. He worked for army as well for 12 yrs. He is also a member of the board of United Professionals Inc., a popular martial arts management consulting company of USA. Besides this, he is also a well known person in other fields too. His training articles are quite popular among readers. He is also known as a distinguished public speaker and has also been invited at many industry events all around the globe.