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affairs of the lips: why we kiss

Researchers are revealing hidden complexities behind the simple act of kissing, which relays powerful messages to your brain, body and partner.   

• A kiss triggers a cascade of neural messages and chemicals that transmit tactile sensations, sexual excitement, feelings of closeness, motivation and even euphoria.
• Kisses can convey important information about the status and future of a relationship. At the extreme, a bad first kiss can abruptly curtail a couple’s future.
• Kissing may have evolved from primate mothers’ practice of chewing food for their young and then feeding them mouth-to-mouth. Some scientists theorize that kissing is crucial to the evolutionary process of mate selection.

(@sciam)