India, Feb. 16 -- When you are happy, you flash a wide, pretty smile. But did you know it serves a deeper purpose? It not only reflects your inner joy but can also draw positive emotions. A study published in the Journal of Positive Psychology showed that when one smiles during pain, it can positively influence both mind and body. It's a natural coping mechanism that alleviates discomfort.

The study found that when someone smiles during a painful task, their heart rate stays low and stable, making them emotionally feel good after it's over. Typically heart rate goes up during a painful task as a stress response.

In the study, the researchers conducted an experiment where 57 participants were asked to place their hands in a bucket of ver...