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| You need **** hrs of sleep per night |
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| immune system, helps prevent infection |
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| you report feeling rested |
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| Period of reduced activity or inactivity |
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| Body does repair damaged cells during |
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Body removes waste products
Restores function |
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Time may vary from several minutes to days or weeks
Planned rest
Vacations, breaks, intermissions, days off |
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Time usually planned by others
Provide for safety
Provide for comfort
Examples – putting children or the elderly back to bed for naps |
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| Altered state of consciousness |
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| Sleep As A Restorative Process |
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Definition
| Helps body recover from all the work it did during the day |
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| Sleep As An Adaptive Process |
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Helps to save energy
Helps to avoid injury and accident when one cannot see (in the dark) |
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| 24 hour day-night cycle (diurnal) |
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Are affected by light and temperature
Are affected by stimulation, activity, stress
Morning or night person |
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| is also known to play a role in sleep as it is released only in darkness. Levels start to rise about 8-10 pm, peak between 2 and 4 AM, and then fall off toward morning. |
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