The “cheerleader effect”, the theory that girls look more attractive in groups, is scientifically proven.
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Only 10-20% of the population can wiggle their ears and raise one eyebrow.
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Yawns are more contagious among people with closer relationships.
163
You forget 90% of your dreams.
256
Babies cry but they don't produce tears until one to three months after birth.
238
Only 2% of the Earth's population are natural redheads.
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