Nadi Shodhana is a pranayama (breathing) practice in yoga that is also known as "alternate nostril breathing." It involves using the fingers to alternately close one nostril at a time, while breathing in and out through the other nostril.
The practice of Nadi Shodhana is believed to help balance the flow of energy (prana) through the body, calm the mind, and reduce stress and anxiety. It is often used as a preparatory practice for meditation or as a standalone practice to promote relaxation and mental clarity.
To practice Nadi Shodhana, sit in a comfortable position with the spine straight and the hands resting on the knees. Use the right hand to block the right nostril with the thumb, and inhale deeply through the left nostril. At the top of the inhale, use the ring finger to block the left nostril and exhale through the right nostril. Inhale through the right nostril, then use the thumb to block the right nostril and exhale through the left nostril. Continue to alternate nostrils in this way, inhaling and exhaling deeply through each nostril.
It's important to practice Nadi Shodhana gently and mindfully, and to stop if you experience any discomfort or dizziness. It's also important to consult with a qualified yoga teacher or healthcare professional to determine if Nadi Shodhana is appropriate for your individual needs and health status.