Prana

Pranas are the vital principles of basic energy and subtle faculties of an individual, that sustain physiological processes and are part of the breath control in yoga. There are five 'Pranas' - together termed as 'Prana': Prana, Apana, Vyana, Udana and Samana

The pranas constitute the second sheath (kosa) of a human being (who is essentially the Atman or the Self). The kosas are listed below

1. Annamaya Kosa (Gross Body)
2. Pranamaya Kosa (Vital Air Sheath) <- this the prana referred here above
3. Manomaya Kosa (Mental Sheath)
4. Vigyanamaya Kosa (Intellectual Sheath)
5. Karanamaya Kosa or Anandmaya Kosa (Causal Sheath)