I’ve read some pretty depressing books in my life (1984, The Road, Twilight etc) but Why We Sleep blows them all out of the water. Professor Matthew Walker cheerfully details the precise mechanisms by which sleep loss makes us fat, stupid, sick and ugly whilst shrinking our reproductive organs and propelling us towards untimely deaths. It is an (ironic) wake up call to the disastrous public health implications of sleep deprivation. The science is fascinating but it’s all rather academic unless you’re actually able to get some. My child, dog, feeble bladder and neighbours all routinely conspire against my sleep attempts. Despite explaining to my son that every nocturnal demand…