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Surya Nadi Pranayama is a yogic breathing technique that involves controlled breathing through the right nostril. The study aims to evaluate the effects of the 20-min practice of Surya Nadi pranayama (4 weeks) on cognition among schoolchildren, comparing it to observing a normal breathing pattern.

Kaki Mudra is a yogic gesture that involves nasikagara drishti focusing on the nose tip without the eyes blinking and pursing the lips, which form beaks during inhalation, and exhaling slowly through the nose. However, there is a lack of evidence on the impact of kaki mudra on cardiovascular changes and autonomic function using pupillary light reflex (PLR).