Sleep, Properly

The book

Most people who are convinced they have a sleep problem are, in fact, sleeping better than their wrist device is reporting. Sleep, Properly is a calm, evidence-grounded account of what sleep actually does — how the brain moves through four distinct stages each night, how the circadian clock governs far more than tiredness, and what research genuinely supports when rest consistently breaks down. Sara Mitchell reads the major voices in sleep science with care: drawing on circadian biology from Russell Foster and Charles Czeisler, and weighing Matthew Walker's widely read arguments precisely — crediting the evidence where it holds, and noting where critics have found his claims overstated. The aim throughout is clarity, not alarm.

What you'll learn

• How the four stages of sleep are structured, and what each one is actually doing for the brain and body
• Why the circadian rhythm is not simply a sleep-wake toggle, and how to work with it rather than against it
• What CBT-I — cognitive behavioural therapy for insomnia — involves in practice, and why long-term studies consistently place it above medication
• The half-life arithmetic of caffeine and alcohol, and what it means for that drink at nine in the evening
• Why sleep trackers frequently misread sleep quality, and why a poor score does not equal a poor night
• Which symptoms — including the signs of sleep apnea — are worth bringing to a doctor

Who it's for

For the adult who wakes at three and cannot get back to sleep, who has absorbed the alarming statistics and worked through the supplements, and who would prefer a clear, unsensationalised account of what the science actually shows — without being handed a rigid protocol in return.