Smith, a holistic medical consultant in the UK with experience using nutritional and natural remedies, helps readers sleep better, overcome insomnia, and move their sleep cycles using natural therapies. He discusses sleep, body chemicals, and the biological clock, and insomnia, its causes, and a step-by-step program for curing it. He draws on the cognitive behavioral therapy insomnia program developed at Harvard Medical School and adds physical and psychological techniques, including techniques for adjusting the timing of melatonin release and using total darkness in the bedroom, the use of bright light therapy in the morning, additional supplements to increase the production of sedating neurotransmitters, more information on retraining the autonomic nervous system to eliminate elevated cortisol at night, and cognitive hypnotherapy exercises. The concluding section addresses ways to adjust problematic sleep cycles, including those caused by jet lag. Distributed by Jessica Kingsley Publishers. Annotation ©2014 Book News, Inc., Portland, OR (booknews.com)