India: The “Namaste” Greeting
In India, there is a custom of greeting others by placing the palms together at the chest and saying “Namaste” when meeting. This is not merely a formality, but carries the meaning of paying respect to the divine presence residing within the other person. Furthermore, the act itself of placing the hands together and bowing slightly serves as a gesture of respect and an opportunity to open one’s heart to the other. Psychologically, this action is said to have the effect of directing one’s awareness inward, promoting mindfulness and reducing stress. Even just carrying a small sense of “Namaste” in daily life may help ease friction in relationships and create mental space.
— Reference : timesofindia.indiatimes.com
