Namaste in the Hindu tradition is more than just a greeting. It is the acknowledging of the fact that every soul is divine. Namaste literally means I bow down to you. Here the bowing down is to the divinity in the person irrespective of his age or merit.
The namaste is performed by bringing both palms together near the heart and paying respect to the other person by bowing the head. It can also be done by bringing the hands near the forehead and slowly bring them near the heart as you utter namaste.
To understand the significance of doing this, you must first understand the concept of chakras which are energy centres located within the body.
According to Hindu tradition, the divine aspect of the person is associated with the heart chakra. So as we bring our hands near the heart chakra we first awaken the divinity within us and as we bow our head and say namaste, we connect with the divinity within the other person’s heart chakra. The bowing down of the head symbolically represents the bowing down of ego in front of the divine soul.
This when done with full dedication brings in a good connectivity with the people and there would be a spiritual union of the two souls. This is the reason people greet each other with a namaste. It is especially good for youngsters to do this with elders as it can help them to get connected with the energy of the elders and help in getting their blessings.