Analysis of information sources in references of the Wikipedia article "Pranayama" in English language version.
In its simplest form, surya bhedana pranayama is inhaling fully through the right nostril, holding the breath and then exhaling through the left nostril. ... The pingala nadi, which represents masculine sun energy, begins in the muladhara (root) chakra and ends at the right nostril, which serves as a sort of entrance to this sun energy. By practicing surya bhedana pranayama, the yogi taps into and activates the pingala nadi energy