Dr. Mark Slavin - With over 30 years in the health and fitness industry,         Mark is the former Educational Director for the National Academy of Sports Medicine (NASM), he currently runs all of the education for RTS International and has taught in over 70 countries. He specializes in resistance training, rehabilitation, and biomechanics and travels worldwide training fitness staff and personal trainers.  He Co-Authored the Kickbox Express Certification and is on the Advisory Board for FIERCE4.