Book excerpt: In this issue of Sleep Medicine Clinics, Guest Editor Erna Sif Arnardottir brings considerable expertise to the topic of Measuring Sleep. Top experts in the field cover key topics such as home sleep recordings, improving machine learning technology, new classification for sleep severity, the role of questionnaires, and more. - Provides in-depth, clinical reviews on Measuring Sleep, providing actionable insights for clinical practice. - Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field; Authors synthesize and distill the latest research and practice guidelines to create these timely topic-based reviews. - Contains 10 relevant, practice-oriented topics including getting more sleep from the recording; sleep measurement in women and children; consumer devices; free living sleep measurements; and more.