You have a sleep-study order and almost no explanation. The night before, you are lying in your own bed rehearsing the glue, the electrodes, and the room you have never seen. This book walks beside you from the referral envelope to the follow-up appointment. It explains what each sensor measures, what a typical night in the lab actually looks like, why a fragmented night is expected rather than a failure, and how to open the resulting report with enough grounding to ask useful questions instead of nodding along. It does not diagnose, does not name medications or supplements, and does not tell you how many hours to sleep. It does name the red flags that need prompt assessment and shows you how to reach the right clinician. Written in calm, concrete prose for adults facing their first study, it is the companion the referral should have come with.
