Dr Chris Idzikowski, BSc, PhD, FBPsS, is Director of the Sleep Assessment and Advisory Service and the Edinburgh Sleep Centre. A leading expert on sleep disorders, he has served as Chairman of the British Sleep Society and the Royal Society of Medicine Forum on sleep problems. Dr Idzikowski has also sat on the boards of the European Sleep Research Society and the US Sleep Research Society. He is the author of four books, including Learn to Sleep Well (Watkins).