Off TopicAre you a QOTWer? Do you want to start a thread that isn't a direct answer to the current QOTW? Then this place, gentle poster, is your friend.
(
rob, Sun 1 Apr 2001, 1:00)
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Why is the sky blue?Why do we yawn?
Why do cats purr?
Why am I always tired?
Why do dogs eat grass?
(
tangledupinblue hairy badge with moving eyes, Fri 17 Aug 2012, 10:28,
1 reply,
13 years ago)
I think yawning is a way of balancing acid-base concentrations in the blood as a side effect from slower respirations due to the release of melatonin when you get sleepy.(, Fri 17 Aug 2012, 10:31, Reply)
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