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What Happens When You Sleep? (Sleep Cycle (Stage 3 and 4 (Deep Sleep or…
What Happens When You Sleep?
Sleep Cycle
Stage one
Light Sleep
Somewhat alert and can be easily waken up
REM sleep
heart rate INCREASES
Stage two
Brain waves slow down
heart rate slows down
Stage 3 and 4
Deep Sleep or preparing for deep sleep.
brain waves become larger
https://blog.health.nokia.com/blog/2015/03/17/the-4-different-stages-of-sleep/
blog about different sleep stages
https://sleep.org/articles/what-happens-during-sleep/
about what happens during sleep
https://www.fastcompany.com/3052403/what-happens-in-your-brain-during-the-two-critical-stages-of-sleep
what happens during sleep?
http://healthysleep.med.harvard.edu/healthy/science/what/sleep-patterns-rem-nrem
Sleep cycles
Sleeping disorders
Sleep Paralysis
Cannot speak or move falling asleep or upon waking
Sleep walking
Jet lag
People who travel quickly across multiple time zones
Extreme tiredness, exhaustion
https://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side
about how cell phones affect your sleep
The blue light from cell phones can affect your sleep. It is known in the daytime to make you feel more awake, and by doing so in the night time, you loose sleep.
Cell Phones
usually caused by sleep apnea
https://sleepfoundation.org/sleep-disorders-problems/abnormal-sleep-behaviors/sleepwalking/page/0/1
about sleepwalking,
Insomnia
Sleep Apnea
https://www.mayoclinic.org/diseases-conditions/sleep-apnea/symptoms-causes/syc-20377631?p=1
about sleep apnea
shortness of breath during sleeping, and interrupting breathing patterns that leave you tired while you are awake.
Overwhelming drowsiness during the daytime
Usually caused by insomnia
https://www.nhlbi.nih.gov/health-topics/narcolepsy
about narcolepsy
Narcolepsy
Hard to fall asleep
Article on Insmomnia
https://www.health.harvard.edu/diseases-and-conditions/insomnia-
How does sickness affect sleep?
Getting too little sleep may cause you to get sick
sleep talking can be caused by fever and other illnesses
https://web.stanford.edu/~dement/sleeptalk.html
about sleep talking
https://medlineplus.gov/sleepdisorders.html
about sleeping disorders
Dreams
Emotions
Thoughts
https://www.medicalnewstoday.com/articles/284378.php
article about why do we dream?
Memories
Lucid Dreaming
Functions
Breathing
Heart rate
Heart rate slows down
Heart rate speeds up
Sleep talking
Rapid eye movement
Takes place during REM sleep, your heart rate speeds up and your eyes move "rapidly" from side to side
https://sleep.org/articles/what-happens-during-sleep/
about what happens during sleep
sleep walking
https://pulmonary.pediatrics.med.ufl.edu/files/2012/09/sleepwalking.pdf
about sleepwalking
Snoring
Movement
Why do we sleep?
http://healthysleep.med.harvard.edu/healthy/matters/benefits-of-sleep/why-do-we-sleep
about the benefits of sleep and theories of why we sleep
Benefits
Body has time to heal and grow
https://healthfinder.gov/healthtopics/population/men/mental-health-and-relationships/get-enough-sleep
about the benefits of sleep
Memory improvement
Live longer
Lessens your risks for some diseases
Helps with focus and attention
Physical and mental changes
Nightmares
Night terror
Anxiety
The article linked to how nightmares can actually be good
https://www.cnn.com/2015/10/21/health/nightmares-health-benefits/index.html
Fear
Depression
PTSD
Stress
Neurobiology
http://neuro.hms.harvard.edu/harvard-mahoney-neuroscience-institute/brain-newsletter/and-brain-series/nightmares-and-brain
about dreams and nightmares