Your body's "biological clock," or 24-hour cycle (circadian rhythm) can be disrupted by a number of factors from too much technology time, not getting enough natural light, working night shifts, a partner who snores, jetlag, children, external sound distractions… the list goes on. Interrupted, or not long enough sleep, can cause a negative impact on our health, happiness and wellbeing; with varying symptoms from mild to severe.

Professor Russell Foster is Head of the Nuffield Laboratory of Ophthalmology, the founding Director of the Sleep and Circadian Research Institute (SCNi) and is a Fellow of Brasenose College, University of Oxford. He is also author of 'Life Time: The New Science of the Body Clock, and How It Can Revolutionize Your Sleep and Health' and is regarded as a world-leading expert on circadian neuroscience.

Circadian rhythms are physical, mental, and behavioral changes that follow a 24-hour cycle. Professor Foster studies how circadian rhythms and sleep are generated and regulated and the impact across the health spectrum when these systems fail. 

Professor Foster shares all the science and research based facts around these common questions, dispelling the myths whilst explaining how a well regulated body clock can drastically improve our quality of life, health and happiness.

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Life Time: The New Science of the Body Clock, and How It Can Revolutionize Your Sleep and Health is available to purchase in most places.