Mark Lauren

Mark Lauren was a certified sports instructor with the U.S. Army, where he prepared more than 700 elite soldiers for Special Operations missions. He became known as the author of the bodyweight-training book *You Are Your Own Gym* (*Fit ohne Geräte*), which was published internationally. His other works include *Fit ohne Geräte für Frauen* and publications and DVDs in the same series. Alongside his work as a trainer and author, he pursued triathlon and Muay Thai and competed in professional-level Muay Thai.