2.  We apparently spend one third of our lives doing
nothing
 If you take a look at what is happening inside of
your brain, however, you will find quite a different
situation
 When we sleep well, we wake up feeling refreshed
and alert for our daily activities. Sleep affects how
we look, feel and perform on a daily basis, and
can have a major impact on our overall quality of
life

3.  Why does sleep matter?
 We sleep for 1/3 of our lives, so it must be
important.
 Yet scientists are only starting to understand it.
 “The brain is in a constant state of tension between
cells and chemicals that try to put you to sleep and
cells and chemicals that try to keep you
awake.”(Brain)

4.  The brain is def not inactive while you are sleeping.
 Neurons are busy working all night
 The neurons of your brain show strong rhythmical
activity when you're asleep
› perhaps replaying what you learned that day

6.  Sleep patterns vary from person to person
 If you are a morning person, you are among the
10% of people.
 If you are a night person, you are among 20% of
the people.
 If you aren't really either of these, you are among
70% of the people

7.  Have you ever gone to sleep with something on
your mind, then woke up knowing the answer?
 Sleep actually can help boost learning
significantly.
 The phrase “Let’s sleep on it” is such a great help!

8.  Sleep Loss tears down all of the thinking
in your brain including:
› Attention
› Functioning
› Memory
› Skills
› Math
› Logical reasoning

9.  Eventually, sleep deprivation can mess
up your motor skills such as walking.
 “Studies suggest that sleep loss and
fatigue result in significant
neurobehavioral impairments in healthy
young adults.”(Univ.)

10.  “This is when NREM begins that is 75% of
your sleep.” (How) It has 4 stages.
 Stage 1 :
› Between being awake and falling asleep
› Light sleep

11.  Stage 2 :
› Becoming disengaged from surroundings
› Breathing and heart rate are regular
› Body temperature drops (so sleeping in a
cool room is helpful)

12.  Stage 3 & 4 :
› Deepest and most restorative sleep
› Blood pressure drops
› Tissue growth and repair occurs
› Hormones are released, such as: Growth
hormone, essential for growth and
development, including muscle
development

13.  After the NREM sleep happens, it turns
into REM sleep which takes up 25% of
your sleep.
 This stage:
› Provides energy to brain and body
› Brain is active and dreams occur
› Body becomes immobile and relaxed, as
muscles are turned off
› Eyes dart back and forth

14.  “REM sleep may constitute a
protoconscious state, providing a virtual
reality model of the world that is of
functional use to the development and
maintenance of waking consciousness”
(Hobson).

15.  This video describes why your brain needs a
nap every once in a while.
 http://youtu.be/m_PiKXwGmo8
 “People vary in how much sleep they need
and when they prefer to get it, but the
biological drive for an afternoon nap is
universal.” (Brain)

16.  "How Sleep Works | National Sleep Foundation - Information on Sleep Health and
Safety."National Sleep Foundation - Information on Sleep Health and Safety |
Information on Sleep Health and Safety. National Sleep Association, 2011. Web. 13 Feb.
2012. <http://www.sleepfoundation.org/primary-links/how-sleep-works>.
› This website gave me some really useful information about the NREM sleep and the
REM sleep.
 Hurd, Ryan. "Scientists Now Think That Light Sleep Might Not Be So Bad For Your Memory -
Business Insider." Featured Articles From The Business Insider. 11 Aug. 2011. Web. 13 Feb.
2012. <http://articles.businessinsider.com/2011-08-11/home/30092355_1_rem-
declarative-memory-light-sleep>.
› This website gave me a good picture of what the two stages of sleep really looked
like. I have the picture of the two brains going under the two different types of
activity.
 "Brain Rules: How Our Brain Works?" Squidoo : Welcome to Squidoo. Web. 13 Feb. 2012.
<http://www.squidoo.com/brain_rules>.
› This article gave me some really useful information about what your brain is doing while you are
sleeping.

17.  University of Pennsylvania School of Medicine. "Sleep Loss and Fatigue in Residency
Training, September 4, 2002, Veasey Et Al. 288 (9): 1116 — JAMA." JAMA, the Journal of
the American Medical Association, a Weekly Peer-reviewed Medical Journal Published
by AMA — JAMA. Web. 13 Feb. 2012. <http://jama.ama-
assn.org/content/288/9/1116.short>
› This peer reviewed article gave me some great information about what happens
when you don’t get enough sleep.
• Hobson, Allan. "REM Sleep and Dreaming: Towards a Theory of
Protoconsciousness."Nature Reviews. Nature Events Directory 2012. Web.
<http://www.nature.com/nrn/journal/v10/n11/authors/nrn2716.html>.
• This peer reviewed article gave me very good information about dreams and what
happens when you are in the REM state of sleeping.