To understand how to kiss better, it’s helpful to understand why humans kiss in the first place.
People kiss in order to express feelings of closeness and desire, as well as to amplify or intensify the arousal they might be feeling. “Kissing stimulates the brain's pleasure regions, causing it to release a mix of hormones that leave you feeling oh so fantastic,” explains clinical psychologist Judy Rosenberg, Ph.D. “These molecules include oxytocin, dopamine, and serotonin, which are pleasurable and promote feelings of affection and bonding.”
There are also a myriad of benefits of kissing, from helping to reduce stress levels to potentially supporting your immune system, according to Texas based clinical psychologist Ana Ortiz-Lugo, PsyD., HSP. And within relationships, kissing serves a vital role in that it can help heal over tensions and promotes closeness. It is also often a vital part of a couple’s sex life and a way to show intimacy outside of the bedroom. While relationships can often go a long time without sex without the intimacy between two people necessarily being lost, Rosenberg says keeping up with kissing is essential for keeping the spark alive.
Interestingly though, while we might think of kissing as something intrinsic to being human, it’s actually culturally specific and only observed in around half of the world’s societies.