Similarly, the “Quality” screen has been updated with a Sleep Staging hypnogram chart. The Duration and Quality screens will tell you how long you were in each stage of sleep.

A sample hypnogram depicting sleep stages of a normal, healthy adult. What advice would you give the harried primary care physician presented with a patient's hypnogram or sleep pattern?

Hypnogram showing stages of cycles of sleep throughout the night. Source: Illustration by Michal Roessler (Knowing Neurons) and adapted from Scholarpedia (McCarley and Sinton, 2008).

Source: Sleep Hypnogram from Wikimedia Commons Royalty Free. The deepest, more physically restorative type of sleep is called slow wave sleep (Stages 3 and 4) because EEG ...

Sleep Staging Among the new features is one called Sleep Staging which Google describes as an analysis of your stages of sleep, according to CNET. The stages are light, REM, deep, and awake.