Seven Tatwas constitute body organs. These are respectively 'BRAHMA' Tatwa, Atma Tatwa and the Ether, Air, Fire, Water and Earth. BRAHMA tatwa and Atma Tatwas are present in equal proportions in the external gross body in the subtle form but these five gross elements keep on changing their respective proportions. To clarify it the gross body has more of element Earth while the subtle body has more of Air. These tatwas must be realized in an order. Their perfect knowledge reveals the secrets of seed Mantras for these are verily the abodes of all the seed alphabets. Counted together in all the five tatwas these number 50-52.
Realization of the separate identity of the five elements, their awakening and finally their collective effects can be attained by the following practices :
1) Realization of the identity of each elements :-
The Sadhaka should sit with an easy posture :-
i) Earth Tatwa : By tasting the fresh earth or by eating it.
ii) Water Tataw : By drinking a gulp of cold pure water.
iii) Fire Tatwa : By touching a flame.
iv) Air Tatwa : By smelling or by feeling the touch of pure air devoid of smell at a height.
v) Ether Tatwa : It is a mixed tatwa hence a combination of all the above experiences (Form i to iv). It contains the attributes of all the above tatwas.
2) Their Awakening : Different tatwas can be activated by the following practices :-
i) By creating Rasa (Taste)
ii) By japa of seeds.
iii) By coloured lights.
iv) By Prana Practices.
v) By Meditation.
i) By Creating Rasa (Taste) :
A) Sit in an easy posture facing north and turn the tongue back and make it enter the hollow of the pharynx. Before venturing for this practice one should do the practice of moulding the tongue. When the tongue so enters the pharynx the tip of the tongue experiences different tastes. It is on account of the development of 'Rasa'.
Earth Tatwa :- Tasteless Rasa.
Water Tatwa :- Like the taste of cold.
Fire Tatwa :- Hot burning.
Air Tatwa :- Like the touch of air.
Ether Tatwa :- Some times cold, some times hot etc.
Rasas are created in the following manner -
Earth Tatwa - By a gentle touch of the tip of the tongue on the back of the pharynx.
Water Tatwa - By clinching the teeth and pressing them by the tongue. The Rasa so generated provides lot of vigour and strength and is like nectar. It must be swallowed as much as possible.
Fire Tatwa - By pressing the tip of the tongue on the back of the pharynx the heat is generated and also heat can be felt any where in the body. Mainly it is felt at the tip of the nose & umbilicus.
Air Tatwa - Pout out the tongue in the fashion of 'Kak Mudra' rolling with sides of the tongue exhale and slowly in hale. Repeat it a few times performing like this stop the breath. At this moment touch is experienced.
Ether Tatwa - Roll the tongue upwards and keep in between the teeth and let breath come in and go out slowly. It leads to the experience of different tastes. These are mixed tastes.
ii) By the japa of seeds : This is a simple practice and bestows quick results. Each element is related to a seed mantra. By performing 1.25 lacs of japa carefully of each seed contemplating the related sites the sound of seed jo and sight of the Tatwa is visualized.
Earth : seed is like a Kundal. If we join it vertically with a straight line it becomes Lam Kundal gives genesis to the knowledge of Kundalini or the Divine Serpent. It is of utmost importance. Its colour is yellow, just as the seed of a Banyan tree contains all the qualities of the tree in the subtle form, this seed also contains essential attributes. It is the mother of other seeds.
Water : Represented by a (vam) which is essentially a drop of water with a tangent vertically. This tatwa bestows nectar. It has blue colour, provides strength and potentiates the memory.
Fire : The seed is (Ram) taken from the figures like the flame of fire. It dispells darkness and is luminous. It is of red colour.
Air : 'Yam' is the seed and contains a part of the kundal. It denotes the essentiality of prana practices in the Kundalini Sadhana. It is of green colour.
Ether : The seed is 'Ham' of mixed attributes. It is a Kundal with an open mouth, pointing towards shakti. It means when the aspirant practices Kundalini Sadhana in this tatwa, he becomes strong like an elephant and the mother kundalini opens her mouth and rains on the sadhaka. It is white below and green in the middle and blue above.
(A) By japa of mantras : The following Mantras are useful in the awakening of Tatwas. BHRAM BHREEM BHROOM BHADRA Prithvi - Earth
Jang Jang Jambhini Bhadra Jala - Water
Ang EENG oong Bhadra Agni - Fire
Vam Veem Voom Bhadra Vayu - Air
Ang Jang Vang Shang should be recited together for awakening the Ether Tatwa.
These mantras are also utilized for the perfection of Soham and for the practical visualization of Aum.
iii) By generating light of Tatwas : Each tatwa has a different colour. Practices for producing lights of different colour of the tatwas. The generation of light of Tatwa is obtained by different practices on the centres of the Tatwa. Few of the many practices, for producing light at the focal point of Tatwas are being given as under :-
a) Visualize sun for a few seconds with a pure body in the early morning and then close the eyes. The shining sun will be visible even when the eyes are closed. Repeat this practices two to three times a day daily. It brings to knowledge completely the knowledge of colour. The tatwas related to gross body also manifest their colours in the light of Yoga. These can be visualized at any time in this Yogic light. It is an easy practice and when sun is not visible a flame of light is a perfect substitution.
b) First develop light at the tip of the nose and then carry this light to different psychic Tatwa centres. This will immediately manifest the colour of the Tatwa. The light of live elements must be awakened in an order, these lights are all pervading. There are practices for uniting them together to produce white light. It is this light that 'Aum' is visualized.
iv) By Prana Prectices :- The Sadhaka should create 'prana' by collision of prana & udana airs then he should forcibly carry this prana this prana to the place of the tatwas and strike at tatwa sites, this is called 'Tankore'. It should be practised daily at least for seven days. This also results in the early visualization of seed alphabets of the tatwas.
v) By Meditation :- Whenever a center is concentrated upon, its tatwas becomes active immediately. Till the meditation is mature the japa of seeds is extremely beneficial. This practice should be done in the following manner. Sit in an easy posture facing north. Take off your mind from the external objects and concentrate on the centres of the subtle body.
For forth tatwas concentrate on Mooladhara, for water tatwa concentrate on swadhishthan and for fire tatwa concentrate on Navel - Manipoora for the air tatwa concetrate on heart Lotus and for Ether Tatwa concentrate on the root of the neck the Vishuddhi Chakra. When the centres are touched by meditaition, there is sensation of itching of a Vibratory movement is felt. This indicates the success of the procedure. After twenty to 21 days practice the tatwas manifest their qualities in light.

Note :
1) These lights and the other yogic visions should be visualized in the Agnya Chakra but the meditation must be done on the respective centere.
2) The fire chakra should be meditated upon for a few seconds only, otherwise it is natural that it will produce a lot of damage.
3) Before performing any practice for the realization of Tatwas first sit in an easy posture and breath in and out through the mouth or nose and mouth repeatedly daily. These practices are useful for the sadhak for realization of active form of tatwas in the innerself and Brahmand, visualization of Aum and in the perfection of soham. Atma tatwas and Brahma tatwa are always active, hence they are only to be realised. The Atma tatwa originates in the area between the root of the neck and Agnya chakra. It means that the visions of this area belong to Atma. Then the Atma tatwa desires to meet the Brahma Tatwa and this meeting takes place in the area extending from Agnya Chakra to the thousand petalled lotus which is being described next.

Aum Shantih, Shantih, Shantih
Yogi Raja the Master