“All the loving acts that two human beings are capable of, the simple act of holding hands can often become the most intimate. Why is this so? Basically, because the nature of the hands and feet is such that the energy system finds expression in these two parts of the body in a very singular way. Two palms coming together have far more intimacy than the contact between any other parts of the body. You can try this with yourself. You don’t even need a partner. When you put your hands together, the two energy dimensions within you (right-left, masculine-feminine, solar-lunar, yin-yang, etc.) are linked in a certain way, and you begin to experience a sense of unity within yourself. This is the logic of the traditional Indian namaskar. It is a means of harmonizing the system. So, the simplest way to experience a state of union is to try this simple namaskar yoga. Put your hands together, and pay loving attention to any object you use or consume, or any form of life that you encounter. When you bring this sense of awareness into every simple act, your experience of life will never be the same again. There is even a possibility that if you put your hands together, you could unite the world!”

Source: Inner Engineering: A Yogi's Guide to Joy