India, Sept. 7 -- "Smile though your heart is aching, smile even though it's breaking." - that gentle 1954 melody of the great Nat King Cole is still embedded in my memory. How true is this. While this city has laughter clubs to improve many people's health, those without such access must learn to smile often to improve their health. Everyone likes to see a smiling face. For instance, however annoyed one may be waiting in a long queue at the cashier's counter, a smiling face behind the counter takes away that annoyance.

A smile makes you more attractive, elevates your mood and of those around you. Smiling activates neuropeptides of the brain that work at fighting off stress and releasing the feel-good neurotransmitters -- dopamine, endor...