Subject: Why do we feel sleepy at 4PM ?
Date: Mon Sep 18 06:06:35 2000
Posted by Cassian Young
Grade level: grad (non-science)
School: No school entered.
City: London State/Province: No state entered.
Country: UK
Area of science: Neuroscience
ID: 969271595.Ns
Message:
I'm told everyone is most sleepy at around 4AM and 4PM because of natural
circadian rhythms. Why ?
What evolutionary benefit does the 4PM low confer? Shouldnt we be working
the fields or hunting deer at this time in the afternoon?
Re: Why do we feel sleepy at 4PM ?
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