- The most important muscle in kissing is the orbicularis oris, which allows the lips to “”pucker.””
- The Kama Sutra lists over 30 types of kisses, such as “”fighting of the tongue.””
- The longest underwater kiss lasted for 2 minutes and 18 seconds in Tokyo, Japan, on April 2, 1980.
- Kissing may have evolved from prospective mates sniffing each others’ pheromones for biological compatibility.
