Element of Prana is very useful. So it is very important that Prana continues to be absolutely purified. Life gets purified only if Prana is absolutely purified. Not otherwise. How can Prana be absolutely purified? There should be development of higher tendencies in the lower kind of tendencies like desires, expectations, covetousness etc,. So becoming benevolent, helpful to others and being happy when other person is benefitted are common practices. It is also the function of Prana to develop good vruttie to experience Chetan or express the higher Bhavna for that purpose in higher stages of development. Prana is present in lower stages of development as well as in higher stages and so is with intellect.
When can Prana be in higher stage? With constant practice and Vairagya (non attachment to worldly pleasures). I do not mean 'world is false' by Vairagya. It is sum total of no attachment, no insistence, no ownership, no greed and no ego.
The function of Prana depends upon different stages of life e.g. Prana has certain function in a child but it changes as we get older.
In higher stages Prana expands, meaning there is less desires, anger, greed and infatuation. Expectations, desires, covetousness and feelings are the characteristics of Jiva-Nature. Prana's good vrutties gets to be less due to Jiva-Nature. When Prana gets to be sublimated (ઊધ્વૅગમન) at a higher stage it expands considerably. Believe that Prana is of higher level only when it is sublimated. It can be identified by its characteristics. It can be surmised that Prana is of higher stage when one is in the same atmosphere of the worldly affairs and one's vrutties are expanding meaning Prana is sublimating.
Pujya Shree Mota
Jivan Yog, Part 1,
Edition 1, Pages 333 - 334
