Nicholas B. Tiller is a researcher in exercise physiology and respiratory medicine, at Harbor-UCLA Medical Center. He was born in London, England. Tiller holds master’s and doctoral degrees in Human Applied Physiology, and is accredited as a physiologist with the British Association of Sport and Exercise Sciences (BASES). He writes on science, health, exercise, critical-thinking, philosophy, and ultra-marathon. He is the author of "The Skeptic's Guide to Sports Science: confronting myths of the health and fitness industry".