The word 'Meditation' comes from the Latin root "meditatum", which means "to ponder". Meditation is a technique for resting the mind leading to peace, happiness, bliss, and self-realization. There are a large number of meditation techniques in the world. Mantra-based meditation is one such technique in which a sound, word or phrase (called "mantra") is recited either aloud or silently during meditation. It has been established by the experience as well as the experiments that the correct frequency of mantra sound, along with the correct intent, helps the practioner oxygenate the brain, reduce heart rate, blood pressure, get cured by many ailments, create calm brainwave activity and achieve immunity from outside mental disturbances. The theoretical and the experimental aspects of mantra-based meditation technique are analyzed scientifically in this paper. The primary aim of this paper is to make the larger number of people, including the intelligentsia, aware of this wonderful gift of Almighty so that they themselves could try practicing meditation for their own benefit and consequently transmit peaceful vibrations to the society in this age of planetary turmoil.