Sleep

Interesting Statistics 77% adolescents go to bed after 10pm 84% get up before 7am 50% need an alarm to wake up 74% of Americans do not get enough sleep each night

Interesting statistics Sleep Deprivation: Costs $150 billion each year in higher stress and reduced worker productivity. Average American get 6 ¼ hours of sleep each night. About 2 hours less than a century ago. Teens should get 65 hours of sleep during the week.

Interesting stats 2/3 teens do not get enough sleep 70 million Americans have sleep problems 35 million Americans suffer from a sleep disorder

Interesting stats 51% of Americans have admitted to driving while drowsy 100,000+ accidents/year 1550 deaths/year 24% of Americans have fallen asleep while driving Peak drowsy times: 2am-4am; 2pm-4pm

Sleepiness and Reaction Time After 18 hours awake, your reaction time begins to slow from ¼ second to ½ second…then longer. Then you can begin experiencing microsleep – zoning out for 2-20 sec. After 20 hours awake, your reaction time is the same as someone with blood-alcohol level of .08 (DUI level)

General Information About 1/3 of our life is spent sleeping Averaging less than 5 hours of sleep will lead to sleep deprivation and problems Less alert Difficulty focusing and learning Slower reaction time Health Problems

General Info Sleep helps build resistance to infection Sleep helps us recover from stress Sleep aids in making learning easier and helps us retain information faster

Stages of Sleep Sleep stages are defined in terms of brain-wave patterns Awake and alert, the brain emits beta waves (short and quick) Drowsy and relaxed, the brain emits alpha waves (slower)

Stage 1: Lightest stage of sleep. Brain waves slow from alpha to theta Transition may be accompanied by brief images that resemble photographs If awakened during this stage, we will recall these images and feel as if we haven’t slept at all Stage lasts 30-40 minutes.

Stage 2: Brain moves to the slowest pattern of brain waves – delta waves Spindles may also occur – rapid bursts of activity

Stage 3: Delta waves continue as you fall into a deeper sleep Night Terrors (not nightmares) can occur in stages 3 and 4 Stages 3 and 4 make deep sleep

Stage 4: Stage of deepest sleep – hard to awaken during this stage By the time you reach this stage, you have been asleep about 1 hour You remain in this stage for about 30 minutes, then move back to 3, then to 2, then to 1 (relatively quick return)

REM Stage: Rapid Eye Movement Breathing becomes irregular, blood pressure rises, heart beats faster Dreams occur during REM First dream lasts about 10 minutes Last dream lasts about 30 minutes REM takes place every 90 minutes from the time you fall asleep until morning Body becomes paralyzed so it doesn’t try to act out the dreams.

REM Stage Stabilizes emotions Catalogues and stores memories Restores the body and makes new cells, restores chemicals used by the brain during the day. W/out: Less attentive More anxious More irritable Difficulty learning

Stage 1 Awake Stage 1 Stage 2,3, 4