Contemporary culture increasingly suffers from problems of attention, over-stimulation, and stress, and a variety of personal and social discontents generated by deceptive body images. This book argues that improved body consciousness can relieve these problems and enhance one's knowledge, performance, and pleasure.
In the R&K standard, NREM sleep was divided into four stages, with slow-wave sleep comprising stages 3 and 4. In stage 3, delta waves made up less than 50% of the total wave patterns, while they made up more than 50% in stage 4. Furthermore, REM sleep was sometimes referred to as stage 5. In 2004, the AASM commissioned the AASM Visual Scoring Task Force to review the R&K scoring system.
Non-REM sleep, which is perhaps best defined negatively as any sleep not recognizable as REM sleep, consists of three separate stages (stage1, stage 2 and stage 3), which are followed in order upwards and downwards as sleep cycles progress.his is also the stage during which parasomnias like night terrors, sleep-walking, sleep-talking and bedwetting occur. Information processing and memory consolidation (particularly of the declarative memory) also takes place during this period, as it also does to some extent during the stage 2 and REM stages.