In a world obsessed with efficiency, sacrificing hours of sleep seems tempting. Yet that choice undermines health and the economy. The Future of Sleep : Sleeping Less but Better ? offers a clear, evidence based panorama of the sleep crisis. The author reveals the physiological and mental consequences of deprivation - from cardiovascular disease and obesity to anxiety and depression - and shows how insufficient sleep costs hundreds of billions each year. He debunks polyphasic sleep myths and explains why brief naps, light hygiene and temperature regulation are more effective than fragmented nights. The book reviews cutting edge innovations : connected trackers, EEG headbands, artificial intelligence algorithms that predict medical conditions, hypoglossal nerve stimulators, cognitive therapies delivered via apps and drugs such as tirzepatide. It also deciphers the rise of sleep divorce, sleep tourism and a booming economy built on smart mattresses and aromatherapy. Through these analyses, one message emerges : the future of sleep is not about sleeping less, but about improving the quality of our nights.