Panchapranas - 5 vital airs of man

There are 12 crores of nerves in the human body. The Panchapranas are:

• Praana:
• Apaana:
• Samaana:
• Udaana:
• Vyaana: pervades the entire nervous system; health of the human body is maintained by this; it also contributes to the experience of happiness; vyaana + 7th sahasraharaa chakra contributes to intelligence

These are all divine and should be used appropriately by man.

Source: Sathya Sai Baba, Pg 16, vol 2, Fundamentals of Sri Sathya Sai Educare