Good sleep

Good sleep
The present studies have demonstrated that many sleep parameters are closely regulated by circadian and homeostatic factors and that there is a consistent relation between subjective perceptions of sleep and the physiological
characteristics of sleep. Apparently, the timing of sleep determines its physiological expression and the latter determines its subjective impression. A good night’s sleep, then, seems to involve a long prior wake span, a location close to the circadian nadir, a long and continuous sleep sequence, and considerable amounts of SWS. For an easy awakening and a feeling of being refreshed from sleep some disturbance towards the end of sleep would be required, perhaps via a slightly delayed bedtime in order to terminate sleep higher up on the circadian upswing.