Om Namah Shivaya is one of the most powerful mantras. The chanter of this mantra gets miraculous benefits at the physical, mental and spiritual levels. Namah Shivaya means "Salutation to Lord Shiva". It is called Panchakshara mantra, meaning that it is the "five-syllable" mantra (excluding the Om) Na, Ma, Shi, Va, Ya. Here 'Na' represents earth; 'Ma' represents water; 'Shi' represents fire; 'Va' represents Pranic air; and 'Ya' represents sky or ether. For this reason, this mantra is known for mastering all these five elements in the Universe. It is not just a moksha giving mantra; it also enlightens, our inner thought-process and improves blood circulation and has a positive effect on the neurons. It increases the happiness molecule which is known as GABA chemical. The list of incredible benefits of chanting Om Namah Shivaya mantra is very large. For example, it gives the chanter freedom from stress, depression and lethargy. It is claimed that the chanter of 'Om Namah Shivaya' need not do any other spiritual practices to attain peace, happiness, bliss and enlightenment.