Please see below recent sleep-related change.
- There are three different types of sleep patterns: monophasic sleep (one chunk at night for a recommended 6-8 hours), biphasic sleep (two chunks in a 24-hour period), and polyphasic sleep (three or more chunks in a 24-hour period). While sleeping, you cycle through four stages: two light, one deep, and one REM. Switching sleep patterns can disrupt these stages, as can consuming alcohol. So while attempting to maximise your awake time, you may be denying your brain and body the time it needs to recover, which can be dangerous, warned Big Think.