Math Buck is Physical Therapist since 1972. He has worked for over 40 years with patients with predominantly spinal neurological symptoms. Math Buck has been an IPNFA instructor since 1984 and has taught many PNF courses.Dominiek Beckers completed a Master's degree in physiotherapy, movement science and rehabilitation at the University of Leuven in Belgium. He has been working as a physiotherapist since 1975 and as an IPNFA instructor since 1984.