Mark Lauren trained US Special Forces operatives for over a decade and revolutionised the US army’s training regimes. During that time he effectively prepared over 700 trainees for the extreme physical demands of the most elite levels of the US special operations community. He is a Military Physical Training Specialist, Special Operations Combat Controller, triathlete and mixed martial artist. Lauren broke, and still holds, the Department of Defense s long-standing underwater record by swimming 133 meters, on one breath, subsurface, for 2 minutes and 23 seconds, until losing consciousness. He lives in Tampa Bay, Florida.