India, Feb. 12 -- On the day before Valentine's Day, the air is filled with love. After the promises and hugs, it is time to step up the romance and seal it with a kiss on February 13, which is celebrated as Kiss Day within Valentine's Week. The day celebrates one of the most widely recognised and passionate physical expressions of love, an act that has inspired poets and artists since time immemorial.

While there has been no formal declaration of February 13 as Kiss Day, it has generally been celebrated as such within Valentine's Week since the turn of the 21st century. However, the act of kissing as a romantic gesture dates back much farther.

According to sex historian, author and content creator Dr Esme Louise James, "the first recor...