1. Sleep, What is it good for?

2. How sleepy are you?

3. Does it really matter?
Ask yourself some questions
and listen to your answers.
Do you fall asleep or feel
sleepy in class?
Do you become easily irritated?
Do you perform as well as you
think you should when
challenged?
Does learning come easy to
you?
Do you typically feel relaxed
and refreshed?

4. Rat Study

5. After 5 days without sleep
the rats started to die 

6. Why and what from?
Died faster than if they had been starved.
They consumed tremendous amounts of food. Yet lost
weight.
Rats naturally have high a metabolic rate.
Without sleep they developed sores all over their body
as if their immune systems stopped.
Sleep helps prevent metabolic harm.
It was as if they could not keep up with the cellular
damage that was being done to them from being
awake.

7. Are you sabotaging your path to
success?
How much sleep does the typical
teen need to feel well rested and
refreshed?
8-9 Hours
Why sleep?

8. Piskel’s Big 5 reasons for Sleep
Replenishes energy to cells in the body/brain.
ATP
Balances cortisol (stress hormone)
Repairs damage from the toxic environment
(free radical damage)
Allows memories to form and neural circuitry
to be completed. (makes new connections in
the brain.)
Allow for neurotransmitters to reload and
dendrites to be scrubbed free of
neurotransmitters (refreshes the brain.)

9. Do you ever get run down and then sick?
Do you ever begin an exercise program
and get sick shortly thereafter?

10. So we obviously need sleep for a
healthy and productive life
What is sleep exactly?
How do scientists measure sleep?
What happens to our brains and body’s
when we sleep?
Scientists wanted to know this too, so
they came up with ways to measure
sleep called polysomnography.

11. Polysomnography
(many measures of sleep)
Measures brain waves
EEG
Muscle tension in the jaw,
EMG
Eye movement EOG
Heart rate, ECG
Breathing Rate.
Temp. of extremities.

12. Brain Waves/ EEG

14. Sleep Cycles, with each passing cycle
REM sleep increases

15. The cycle repeats but changes with
each passing cycle.
REM sleep increases with each passing cycle.
Deep delta sleep occurs in the first several
cycles but then decreases with each following
cycle.
Typically when you wake up naturally you are
in REM sleep. You may recall your dreams
from REM sleep.
REM sleep is important.

16. This sleep is thought to be the most important for
memory formation and consolidation including
muscle memory. Athletes this means you.
Neuron growth and development happens here.
Babies spend 50% of their time in REM sleep adults
are 20% or less.
The evil snooze alarm.  Are you guilty? You’re
losing REM
The evil nap  >20 minutes, are you guilty? You’re
losing REM

17. Good Sleep Habits
Create a set schedule to your sleep. Plan backwards.
Don’t watch TV/computer monitors right before bed.
(Darkness stimulates the pineal gland to produce the hormone
Melatonin, which brings on sleep. Light inhibits melatonin
production.)
Don’t eat large meals before bed.
Do relaxing quiet activities before bed.
Don’t do strenuous exercise before bed time.
Set your alarm for the time you want to wake up.
16 hours of feeling good each day are way better than 19
hours of being awake and feeling bad.

18. http://www.cbsnews.com/stories/2008/03/14/60minutes/
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