India, March 12 -- Good mood is contagious, where an ebullient laughter and a simple smile can instill instant joy. In wedding vows, "What's yours is mine" is often heard, promising to stand by each other's side during challenging times. It's not all somber, as the idea of "What's yours is mine" also extends to happiness.

A study published in Psychoneuroendocrinology found that when one partner is in a good mood, it can have a direct impact on reducing the stress levels in the other.

The study was conducted on older couples, so this connection is established in long-term partners. they were aged between 56 and 87.

As per the findings, when one partner is happy and cheerful, this reduces the other's cortisol, also known as stress hormon...