Dr Heidi Haavik is the Director of Research at the New Zealand College of Chiropractic. She is a chiropractor and has a PhD in human neurophysiology from the University of Auckland. She is the author of the best-selling book ‘The Reality Check: A quest to Understand Chiropractic from the inside out’. This book describes in easy to understand language what happens in the brain when a chiropractor adjusts the spine. Dr Haavik also runs a company with the mission of enlightening the world about the science of chiropractic (@www.therealitycheck.com).