The word “Chandra” is stands for the Moon and the meaning of Bheda is breaking through. We have two nostrils for breathing, in yogic term these two nostrils are called nadi, Right nostril is surya nadi and left nostril is known as Chandra nadi. Chandra Bhedana Pranayama is the simple and effective breathing technique. Moon is the symbol of coolness, so by doing this pranayam we feel some coolness in our body.
It is said that energy passes through Ida (Chandra) Nadi on the inhalation and through Pingala or Surya Nadi on the exhalation. These are larger nadis that hold the balance of magnetism and energy created by the sun and moon. They travel from the base of the spine to the point between the eyebrows.