Reading does lower stress — the research is reasonably solid on this. But "read a book" is useless advice without the second half: which book. The wrong one under pressure doesn't relax you, it just adds a task you're failing at.
What makes a book work under stress
Low ambiguity. A stressed brain doesn't want to work out who is lying. Short chapters. Natural stopping points mean you can put it down without losing your place or your nerve. Familiar shape. You want to trust the book will be alright. Concrete detail — food, weather, rooms — because sensory specificity pulls attention outward, which is exactly what anxiety won't do on its own.
Under stress, comfort isn't a lesser choice. It's the correct clinical dose.
What to avoid, temporarily
Anything with unresolved dread, ambiguous narrators, or the news wearing a novel's coat. Dystopia in particular is a bad idea right now — brilliant genre, wrong week; more on that in dystopian books that still hit.
What works
Rereads, first of all — a book you already love has zero risk and immediate reward. Beyond that: cosy mysteries, warm contemporary fiction, well-written non-fiction about something narrow and absorbing, and poetry, which asks for two minutes rather than two hours (see poetry for people who don't like poetry). Our list of feel-good books is built for exactly this.
Lower the target
Five pages counts. The goal isn't to finish a book; it's to give your attention somewhere kinder to be for a few minutes. If even that's hard, try audio and let someone else carry the effort — text-to-speech works well when your eyes are done for the day.
Company helps more than content
A lot of stress is loneliness wearing a different name. Knowing someone else is in the same book — even a stranger, even asynchronously — takes some of the weight off in a way the text alone doesn't. That's what Arwy is built around: reading stays quiet, but it stops being solitary.
Read something gentle, with quiet company. Try Arwy.