Kissing On The: Mouth

The roots of mouth-on-mouth contact likely trace back millions of years.

: A first kiss can act as a "litmus test" for a relationship. Through saliva exchange, individuals can subconsciously pick up on hormonal and immune system signals that help determine long-term compatibility. Health Benefits : Kissing on the Mouth

Kissing has meant different things to different people throughout history. The roots of mouth-on-mouth contact likely trace back

: Recent research suggests that if both great apes and humans kiss, their last shared ancestor —living roughly 21 million years ago—likely did as well. Health Benefits : Kissing has meant different things

Explore the biological, evolutionary, and social reasons why humans engage in kissing: Why Do We Kiss? YouTube · BuzzFeedVideo The ancient origins of kissing - BBC World Service YouTube · BBC World Service Is Kissing Good For You? | What's Up Docs? YouTube · BBC Sounds