Stand with the feet about a metre apart. Take a deep breath in through the nose and then exhale through the mouth, emptying the lungs as much as possible.
Bend the knees slightly and lean forward, placing the palms of the hands on the thighs just above the knees.
The fingers may point either inward or outward. The weight of the upper body should rest comfortably on this area above the knees. The arms should remain straight.
Perform jalandhara bandha while maintaining bahir kumbhaka, external breath retention.
Keep the eyes open and watch the abdomen. Suck in the lower abdomen. Contract the rectus abdominii muscles so that they form a central arch running vertically in front of the abdomen.
Contract the muscles as much as possible without straining. Hold the contraction for as long as it is comfortable to hold the breath.
Release the contraction, raise the head and return to the upright position. Inhale slowly and deeply allowing the abdomen to expand. Relax the whole body.
Relax in the standing position until the heartbeat returns to normal.
Practice Keynotes
Before attempting nauli the practices of agnisar kriya and uddiyana bandha should be practiced.
Cautions and Limitations
Nauli should only be practised under expert guidance.
If any pain is felt in the abdomen during nauli, stop the practice immediately.
Try again the following day or when the pain subsides.
Contraindications
Nauli should not be attempted by people suffering from heart disease, hypertension, hernia, high blood pressure, gallstones, acute peptic ulcer, or those who are recovering from internal or abdominal surgery.
Pregnant women should not practise nauli.
However, four to six months after childbirth the practice is recommended to strengthen the abdominal and pelvic muscles, reshape the body and readjust the position of the inner organs.
General Benefits
Nauli massages and tones the entire abdominal area including muscles, nerves, intestines, reproductive, urinary and excretory organs.
It generates heat in the body and stimulates appetite, digestion, assimilation, absorption and excretion. It helps to balance the adrenal component of the endocrine system.
This practice alleviates constipation, indigestion, nervous diarrhoea, acidity, flatulence, depression, hormonal imbalances, and urinary disorders, diabetes, lack of energy and emotional disturbances.