When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
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The P.S. at the end of a letter stands for Post Script.
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Quality dark chocolate contains flavonoids which help reduced the risk of heart disease.
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Kissing an infection-free partner is good for your teeth!
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