An overview from Goodreads:
'Neuroscientist and sleep expert Matthew Walker provides a revolutionary exploration of sleep, examining how it affects every aspect of our physical and mental well-being. Charting the most cutting-edge scientific breakthroughs, and marshalling his decades of research and clinical practice, Walker explains how we can harness sleep to improve learning, mood and energy levels, regulate hormones, prevent cancer, Alzheimer's and diabetes, slow the effects of ageing, and increase longevity. He also provides actionable steps towards getting a better night's sleep every night.'
Previously, a professor of psychiatry at Harvard Medical School, Matthew Walker is a British scientist and currently a professor of neuroscience and psychology at the University of California, Berkeley. His research focuses on the impact of sleep on human health and disease.
You can watch his TedTalk here