As the body is made healthy by improving the vitality air viz by improving internal air by breathing activity with pranayama in the same way the body can be kept healthy by improving the apaan vaayu. Path from navel to anus is controlled by apaan vaayu. Purak and rechak activity are done in this activity. The practice of appanayam prayanama can be done in all the three ways viz in lying, sitting and standing position.
Select neat and clean environment and presence of clean and fresh air is necessary. Spread a bed sheet or mat on the floor and sit upon it in sidha asana or padma asana. Put both the hands on the knees and keep the body straight and tight. Keep the mind calm and stable. Now fluff your stomach while taking breath normally. After that, shrink the stomach while exhaling, and stretch the navel inside and try to touch with the backbone. This activity makes the apaan vaayu pure by mixing with vitality air.
Keep your hand on the stomach in this way so that the thumb may remain at the back side and fingers towards the front side. After that, fluff the stomach toward the right side with the help of left hand and shrink toward the left side. Now press the stomach at the back side with the help of right hand. Now shrink the stomach in the right side and fluff in the left side. Do this activity for some days regularly. The stomach starts to move backward and forward and left and right side by doing so. The apaan vaayu is controlled by it. The apaan vaayu become pure by meeting with vitality air. Thus, the body becomes health.
Choose place like before for the practice in standing position. First, stand straight. Now exhale internal breath completely and stretch the chest inside. Try to stretch the navel upward. Take the support of table or any thing, which may be lifted by you, for stretching the navel up easily. Now raise this thing up for the practice.
The navel will come upward itself because of lifting the thing up. Now leave the table from your hand and put the knees on the knees and take breath. After that, keep the stomach stretched inside until the navel comes out. When the navel turns into normal position, stop your breath. After stopping breath for sometime, exhale the internal breath and repeat this activity again like before.
Choose the above environment for the practice of this prayanama and lie down on the floor. Keep both the hands under the chest in the sides and keep both the legs straight by joining. Keep the chin close with the throat. Stretch the body forwardly while putting the weight of the whole body on both the hands and tiptoes. In this activity, try to bend your hips forward according to your capacity. After that, do the activity of breathing (exhaling and inhaling). Thus, do the practice of this activity many times.
Practice of this prayanama should be done in the supervision of any yoga guru. Do the practice of this prayanama carefully otherwise it may be harmful.
Diseases such as surfeited, headache and constipation are cured by this prayanama. It clears the stomach too. The stomach should be kept loose in this activity according to your capacity by which internal air comes out itself.