“It is unscientific and stupid to think that a mantra does not do anything to your body. That is not the case! It does.
Mantras bring out all the positive energy inside you. That is why it is called mantra kavach; a mantra creates the sense of an armor around your body.” – Sri Sri Ravi Shankar

VISHNU SAHASRANAMA
The Vishnu Sahasranama is an ancient Sanskrit text praising the qualities of the consciousness in the form of Vishnu (the energy that sustains things and keeps them together), singing his thousand (sahasra) names (nama). The chanting of these mantras in the proper manner bestows purity of body and mind and increases awareness. It also brings unwavering calm of mind, freedom from stress, and knowledge of reality.