Why people feel sleepy when they read?
Jun 02, 2009
Have you ever wondered why we feel sleepy when we read for a long time?
I found the answer when I was going through some of the Scientific facts in internet.
We usually feel sleepy when we study or read for a longer time. We conclude that we feel sleepy as the subject we are reading is boring or uninteresting.
But the actual reason is not that. We feel sleepy due to the posture in which we study. When we are studying for a long time continuously, lack of physical activity decreases our blood flow to muscles.
Due to this lactic acid accumulation takes place. Lactic acid is formed due to incomplete combustion in cells. Lactic acid is an agent which absorbs oxygen and it readily reacts with oxygenated blood thus reducing the flow of oxygenated blood to the brain.
Yawning also occurs due to reduction in the amount of oxygen in blood. So the amount of oxygenated blood to brain reduces and makes us feel sleepy.
To avoid this we have to take occasional breaks while studying,which involves some physical activity.
Posted by shankar13288 | Tags: Announcement
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June 18th, 2009 at 10:31 am
Good Site know the unknown things.
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June 30th, 2009 at 12:19 am
Great !!! Now i can avoid sleepy.
Thank you so much.
Cheer!!!!
August 1st, 2009 at 11:38 am
Nice blog to know differnet things…
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