A world-renowned strength and conditioning coach and innovator of the endurance, strength, and conditioning paradigm. MacKenzie created CrossFit Endurance, which specializes in movement with an emphasis in running mechanics and programming. He has worked with professional and elite level athletes in running, cycling, rowing, MMA, MIL/SOF, LEO, Fire/EMT, surfing, swimming, CrossFit - including Olympic Gold Medalists and World Champions. Mackenzie now uses the Cue to promote his take on proper movement mechanics with all of his athletes.