With his bestseller "Fit Without Equipment," which has been published in 12 languages and sold millions of copies worldwide, former military trainer Mark Lauren became a fitness icon almost overnight. For several years, the fitness professional, born in Germany, prepared American elite soldiers for their deployment in Special Operations. During this time, he developed an extremely efficient training concept that uses only body weight as resistance. The exercises can be performed in a small space and require a minimum of time: training intensely for just 30 minutes, four times a week, is enough to become slim, strong, and fit in record time. This training concept has proven to be perfect for today's world and has sparked a massive global trend: bodyweight training. Whether at home, in a hotel room, or at the office - you can train anywhere.