JB Berns has a long background in the martial arts, yoga, personal and wellness training and developing exercise systems. He was named by Fitness Magazine as one of the top 10 personal trainers in the nation. While recovering from a knee injury, he used his 20-plus years of martial arts experience to develop the low-impact Urban Rebounder exerciser system, which sold millions and was named one of the top 100 products of 2008 by Consumer Reports. The Urban Rebounder is now in over 5,000 gyms worldwide and 18 different countries. Berns has also created many DVDs for exercise and wellness, which are available worldwide in nine different languages, including The Perfect Martial Arts Workout, Rehab Your Body at Home, The Isometric Total Body Workout, Deante Modern Dance Workouts, and Kids Bound. In addition, he designed the Jackie Chan CableFlex System for resistance and aerobic exercise at home. Berns has appeared on many television programs such as The Today Show, CNN, CBS, NBC, The View, and The Doctors.