What Happens When You Sleep: One Night, Hour by Hour

You spend a third of your life asleep, and you have almost no idea what goes on in there. Why do you surface at 3 a.m. for no reason? Why was last night's dream so vivid, and why did it vanish by breakfast?

This audiobook walks you through one full night, hour by hour, in the spirit of Why We Sleep. You'll hear how your brain runs a night-shift cleaning crew during deep sleep, how memory filing quietly decides what you keep from yesterday, and how REM sleep works like a film editor cutting the day's footage into dreams. Each stage comes with a tangible everyday analogy and a gentle takeaway for your own days, from light and caffeine timing to why that late-night wake is usually normal. Where the science is still unsettled, you'll hear that plainly.

By the hormonal sunrise that wakes you, a night of sleep will finally make sense. Press play tonight, and meet the version of you that works while you rest.