Oxytocin is associated with love because it's released during activities like hugging, touching, and orgasm. In these situations, oxytocin can help foster feelings of attachment. Afterwards, feelings may linger but the oxytocin quickly dwindles. "The release of oxytocin is very small and transient," says Khera. "It's a surge – a burst – of oxytocin, then it goes back down." Longer lasting amounts may seem more desirable but synthetic doses of oxytocin have been shown to amplify both positive and negative feelings and perceptions people have about others.
Credit: Valentin Casarsa / Getty Images
The 2014 Adventure Issue
From Iceland's Highway 1 to Utah's Canyonlands, an epic itinerary for modern explorers.
Plus: Building a Bigger Action Hero
ON NEWSSTANDS NOW
Duke Lacrosse and the Fog of Scandal
How Thailand's Most Notorious Prison Became a Fight Club
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