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   PG Cert Learning and Teaching in Higher Education (2017)

   Ph.D. Human Applied Physiology. Brunel University London (2014)

   MRes Exercise Physiology. University of Hertfordshire (2007)

   BSc (Hons) Sports Science. University of Hertfordshire (2005)


   Senior Researcher (Exercise Physiology). Harbor-UCLA

   Associate Prof. (Applied Physiology). Sheffield Hallam University

   Assistant Prof. (Applied Physiology). Kingston University London

   Expert Science Executive. GSK Human Performance Lab 

   Performance Physiologist. English Institute of Sport


For over a decade, Nick has been scrutinizing the global health and wellness industry through the critical lens of scientific skepticism. His first book, The Skeptic's Guide to Sports Science: confronting myths of the health and fitness industry, was published in 2020 and was named one of Book Authority's "Best Sports Science Books of All Time". Tiller has contributed articles on skepticism and critical thinking to numerous mainstream outlets and writes a monthly column for Skeptical Inquirer: the magazine for science and reason, published by the Center for Inquiry. Visit the 'Skepticism' page for a collection of Nick's talks, articles, podcasts, and TV and radio spots.


Nick is a renowned authority on the physiology and pathophysiology of ultra-endurance exercise, particularly ultramarathon. Nick ran his first marathon in 2001 at the age of 18 years and contested Ironman triathlon (Frankfurt; European Championships) in 2009. In 2010, he ran his first ultramarathon. Since then, Nick has contested some of the world's toughest endurance races including the Marathon Des Sables (Sahara Desert) and several 100-mile trail races. In recent years, Nick has unified his personal passion for 'ultra' with his professional work in physiology, contributing numerous original research and review papers on the subject to premier exercise science journals. In addition to peer-reviewed research, Tiller contributes articles to mainstream outlets and writes a monthly column for Ultra-Running Magazine. Visit the 'Ultramarathon' page for a collection of articles, videos, podcasts, and key races.