[raison d'etre = reason or justification for existence]
For maintaining mental health, peace and balance of mind are essential. Peace of mind is the result of mental purity and mental purity accrues from stabilizing the body. The more stabilized the body, the cleaner the mind. The mental uncleanliness is the result of mental excitation, agitation and turmoil, and unless the body is stabilized, mental turmoil cannot be eliminated. Motionless state of the body is the prerequisite for slow and silent respiration, silence and peace of mind. Unnecessary memories of the past and planning for the future continue to encroach on the present (work in hand) and vicious cycle of thoughts keeps the mental equipment in constant turmoil. Prerequisite and precondition for preventing all the mental uncleanliness is relaxation. Once the body is relaxed and made motionless, all the above inflictions vanish, and the higher stages of the process of spiritual uplift are made easily attainable.