Source: 24/7 News
On this National Kissing Day, Los Angeles relationship expert Marla Mattenson says studies show kissing boosts happiness.
She says it's important for people in long-term committed relationships to remember that.
Mattenson says if you can get in a couple of good kisses a day, you'll help calm your partner's system and trigger the release of happiness hormones.
Additional audio: Relationship expert Marla Mattenson says kissing is good for you.