Tuesday, October 22, 2013

Improving the Base Camp - and - a Note About REM Sleep | Dave Canterbury


"The ability to get a good night's sleep, in a wilderness situation, is one of the true marks of how good a person's skills are in the woods." ~ Dave Canterbury

Dave Canterbury, David Canterbury, The Pathfinder School, Bush Craft, Survival Skills, Historical Lore, Primitive Skills, Archery, Hunting, Trapping, Fishing, Navigation, Knives, Axes, Fire, Water, Shelter, Search and Rescue

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REM sleep in adult humans typically occupies 20–25% of total sleep, about 90–120 minutes of a night's sleep. REM sleep is considered the lightest stage of sleep, and normally occurs close to morning. During a normal night of sleep, humans usually experience about four or five periods of REM sleep; they are quite short at the beginning of the night and longer toward the end. Many animals and some people tend to wake, or experience a period of very light sleep, for a short time immediately after a bout of REM. The relative amount of REM sleep varies considerably with age. A newborn baby spends more than 80% of total sleep time in REM. During REM, the activity of the brain's neurons is quite similar to that during waking hours; for this reason, the REM-sleep stage may be called paradoxical sleep.

REM sleep is physiologically different from the other phases of sleep, which are collectively referred to as non-REM sleep (NREM sleep). Subjects' vividly recalled dreams mostly occur during REM sleep. -- Wikipedia