Onions, Emotions, and Why We Cry

The video explores the reasons behind human crying, highlighting three types of tears: basal, reflex, and emotional. Basal tears keep eyes lubricated, reflex tears protect against irritants, and emotional tears are linked to feelings. Emotional tears have a unique chemical composition, containing proteins and stress hormones, which may help relieve stress. Theories suggest emotional tears serve as social signals, enhancing communication and empathy, and promoting group bonding.

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