Mantras are sounds or words that are repeated to protect oneself from harm. They originate from Sanskrit and are tools used in Tantra and Vedic traditions to uplift the mind and induce calmness through repetition. When the frequency of a chant matches the natural frequency of the body, it creates a soothing resonance effect. Different types of mantras include siddha mantras for attainment and shanti mantras for invoking peace. Regular chanting of mantras can enhance health and purification of the mind by spreading positive vibrations. Proper chanting style and opening prayers are discussed.