Q:

Why do people get sleepy

Answer

The Circadian Rhythm regulates sleep so people are up during the day, and sleep at night. Hormones like melatonin also work.

Categorized In: Health , Biology

Source: Sleep and Circadian Rhythms | healthlink.mcw.edu

4 days ago, 02:08am

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More ChaCha Answers (3)

The Circadian Rhythm regulates sleep so people are up during the day, and sleep at night. Hormones like melatonin also work.

Mar 27 2009, 07:17pm | Source: Sleep and Circadian Rhythms | healthlink.mcw.edu

Humans have an internal 24-hour clock which regulates our daily activities such as sleep and waking.Circadian clocks affect (more)

No one knows for sure why we sleep, but here are 2 basic theories, Sleep has a restorative function.Sleep has an adaptive function

Jan 25 2009, 01:54am | Source: Neuroscience for Kids - Sleep | faculty.washington.edu

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