Jim Horne is Professor of Psychophysiology and Director of the Sleep Research Centre at the University of Loughborough. He is a fellow of the Institute of Biology and the British Psychological Society, and is Editor-in-Chief of the Journal of Sleep Research. Horne is the UK's best-known sleep expert-he is frequently called upon to discuss topics related to sleep and sleep disorders on radio and television, and writes regularly for newspapers and health and science magazines. His previous publications include Why We Sleep (OUP 1990).