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
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)
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 youre asleep › perhaps replaying what you learned that day
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 arent really either of these, you are among 70% of the people
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!
Sleep Loss tears down all of the thinking in your brain including: › Attention › Functioning › Memory › Skills › Math › Logical reasoning
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.)
“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
Stage 2 : › Becoming disengaged from surroundings › Breathing and heart rate are regular › Body temperature drops (so sleeping in a cool room is helpful)
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
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
“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).
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)
"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.
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.