Health Library
The Health Library is a collection of health and wellness resources created for learning and accessibility. Select a topic below for related health information or search for a topic in the search bar for more information on other medical conditions.
Sleep Patterns
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Sleep patterns naturally change as you get older. Compared to younger people, older adults: Sleep fewer hours and take longer to fall asleep. Sleep less deeply and wake up more often during the night. Have more trouble adjusting to changes in...
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Getting enough sleep and rest is important during the teen years. Teens need more sleep than younger children, because rapid physical growth and activity during the teen years can cause fatigue. Many teenagers sleep late whenever possible and often have problems getting up in the morning. Teenagers' biological clocks...
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What is the body clock? The body's "biological clock," or 24-hour cycle ( circadian rhythm), can be affected by light or darkness, which can make the body think it is time to sleep or wake up. The 24-hour body clock controls functions such as: Sleeping and waking. Body temperature. The body's...