The Holistic Performance Institute

Cliff Harvey PhD, DipFit, DipNat, FCNA is a Registered Clinical Nutritionist, Registered Naturopath & Medical Herbalist, author, educator, and researcher. He was recently inducted as a Fellow of the Clinical Nutrition Association for his services to Clinical Nutrition in Aotearoa.
In nearly three decades in practice, he has helped thousands of people to achieve their goals, from those who are chronically and acutely unwell, through to elite-level athletes, and ‘elite-attitude’ businesspeople and entrepreneurs.
He is an active researcher and is known for performing foundational research on keto-flu, ketogenic supplements, and 'carbohydrate tolerance'.
Cliff is a best-selling author of several books and is a former world champion strength athlete and competitive submission wrestler.

Michelle Yandle BEd, HPN1, is a renowned health coach and health educator. A Registered Health Coach, and Certified Holistic and Performance Nutrition Coach, Michelle is the founder of the Centre for Empowered Eating and the developer of the Empowered Eating Coach Certification and co-developer of the Health Coaching qualifications delivered at the Holistic Performance Institute. She has written books, inspired audiences around the world, regularly presented on television and radio, working with household name nutrition brands, and her health advice has been featured in the pages of a number of high-profile publications. Initially trained as a schoolteacher, Michelle discovered the benefits of healthy eating based on traditional nutritional principles and has built a new career through passionately and authentically sharing what she has learnt about ‘empowered eating.’