Can't sleep? Getting a good night's sleep can improve your mood, cut your risk of depression, help you fight chronic disease, keep you slim and even improve your memory; so why is it that so many of us don't prioritise the necessary 7-8 hours a night? In Fast Asleep, Dr Michael Mosley brings together the latest science to explain exactly what happens to us when we sleep and why it is so important that we get enough of it. Prone to insomnia, he has taken part in numerous sleep experiments and tested every sleep remedy going. He explains why so many of us struggle with sleep, what works and what doesn't and shares his own myth-busting programme to help you achieve a good night's rest.