Pranayama

1. Sürya Anuloma Viloma Práïáyáma

Sthiti: Vajrásana
Practice
Adopt Násika mudrá with your right hand.
Close the left nostril with the little and ring fingers of  Násika Mudrá.
Inhale and exhale slowly through the right nostril (Sürya Nádi) only.
Keep the left nostril closed all the time during the practice.
One cycle of inhalation and exhalation forms one round.
Practice nine rounds.
Note
Time taken for exhalation should be longer than inhalation.
Depression patients may practice this Pránayama 27 rounds before breakfast, lunch, dinner and  before sleep (4 times a day).

2  Candra Anuloma Viloma Pránayama.

Sthiti: Vajrásana
Practice
Adopt Násika Mudrá with your right hand.
Close the right nostril with the tip of the thumb.
Inhale and exhale slowly through the left nostril (Candra Nádi) only.   
Keep the right nostril closed all the time during the practice.
One cycle of inhalation and exhalation forms one round.
Practice nine rounds.
Note
Time taken for exhalation should be longer than inhalation.
Anxiety patients may practice this Pránayama 27 rounds before breakfast, lunch, dinner and  before sleep (4 times a day).

Benefits
(For Süryanuloma-Viloma and Candranuloma-Viloma Pránayama)
Physical :
These Pránayamas help in clearing of the nasal passages. With regular and long practice, flow of breath through each of the nostrils becomes smooth and slow.
Therapeutic :
It is very useful for nasal allergy and Deviated Nasal Spectrum (DNS). Suryanuloma-Viloma helps in reducing the obesity effectively and Candranuyloma-Viloma help in increasing weight.
For specific significant improvement, the recommended schedule is to have twenty-seven rounds of this Pranayamas four times a day (before breakfast, lunch, clinner and before going to bed). Systematic practices have benefited large number of obese and under weight persons to achieve normal weight.
Spiritual :
Cleaning of Surya and Chandra Nadis is the first step to bring the balance between the two Nadis. They aid in unfolding of the inner layers of consciousness.
Limitations
For Süryanuloma-Viloma Pránayama, people suffering from high blood pressure, any heart disease and underweight problem should avoid this practice.
For Chandranuloma-Viloma Pránayama, people suffering from obesity and any type of allergy should avoid it.

3 Nádisuddhi Pranayama

Sthiti: Vajrásana
Practice
Sit in any meditative posture.
Adopt  Násika Mudrá.
Close the right nostril with the right thumb and exhale completely through the (left) nostril.  Then inhale deeply through the same left nostril.
Close the left nostril with your ring and little  finger of the Násiká Mudrá, release the right nostril. Now  exhale slowly and completely through the right nostril.
Inhale deeply through the same (right) nostril. Then close the right nostril and exhale through the left nostril. This is one round of Nádiùuddhi práïáyáma.
Repeat nine rounds.
Note
This practice helps to maintain balance between Nádis.
If you feel headache, heaviness of the head, giddiness, uneasiness etc. it means you are exerting much pressure on the lungs.
The first symptoms of correct practice is the feeling of freshness,
energy and lightness of the body and mind.
Benefits                   
Physical :
It promotes balance between the two nostrils apart from cleansing the nasal tract. It increases the vitality. Metabolic rate decreases as in case of all other Pránáyáma practices. It increases the digestive fire and appetite.
Therapeutic :
It lowers the levels of stress and anxiety by harmonising the pranas. It is beneficial  in  respiratory disorders such as Bronchial  asthma, Nasal allergy, Bronchitis etc.

Spiritual :
It induces tranquility, clarity of thought and concentration. It  clears pranic blockages and balances Ida and Pingala nádis,causing Shuúumna nádi to flow which leads to  deep states of meditation and spiritual awakening.  It helps to maintain Brahmacharya which is a pre-requisite for spiritual progress.
Limitations
No Limitations.