Vincent Hoogstad (1976) is a veterinary physiotherapist, anatomist and behavioural ecologist, specialising in primate locomotion, behaviour and conservation. He works as a therapist, scientist and teacher. In Crete, Greece, he started Animal Rehabilitation Crete, the first rehabilitation center for domestic and wild animals. Vincent advocates natural behaviour and the One-health movement. Dr. Jan-Paul van Wingerden (1962) is managing director of the Spine & Joint Centre, a Dutch rehabilitation center where since 1996 over 15000 pain patients have been successfully treated. As physiotherapist, anatomist and scientist his passion is to comprehend how humans and other animals -in the broadest sense- function.