1. Prana,Indriya,Mun(Mind) aur atmaThe four most important things to know according to Vedic literatureare:Prana,Mun,Indriya aur atma.Our human body,and the body of other organisms is madeup of these four basic substances.Let us go one by one:(1)Prana:This is called as the oxygen(O2).This is inhaled.The pranas are of five typesaccording to our great Rishis.What we exhale is a type of prana called apan.This prana isdistributed to whole of the body.When it goes out the animal dies.Life is there wherePranas are there.With the help of this prana we are able to work.We can think.We canwalk/talk,laugh,work etc.Pranas are responsile for metabolism providing proliferating ofour body.(2)Mun(mind):This is the most important organ which controls all of the activities.Themain quality of "mun" is to know.If our eyes or ears are not connected to the brain wecant know what is outside.We perform various actitvies by it.It is unconscious.The "Mun"is controlled by pranas.We give an inspiration to what we inhale so that our mind canwork.(3)Indriya(pl.):Indriyas are of two types.They are as follows:(1)Karmendriya:These are five i.e.Hand,leg,mouth,anus and penis.(2)Jnyanendriya:These are also five i.e.eye,nose,ear,toungue and skin.The Indriyas cannot work without Mun and Pran.Everyone can know their importance after looking at them.(4)Atma:This is the most important element which denotes us i.e. a vachya-vachaksambandh between us and the word "atma".This with the help of its powers and will controls Pran,Mun and Indriya.Pran,Mun and indriya are unconscious while sould is conscious.Pranayam means to control "Prana".This is done by stopping it many times outside orinside by various ways.When Pran is stopped it comes in our control.Now,we can give anyinspiration to it which we want so that we can do the desired task.If "Pran" comes underthe control of Atma,it can control Mun and Indriyas i.e. the full body.Many persons thinkthat Pranayam means just to exhale and inhale.But it is not so.If our body comes in ourcontrol the world comes in our control.Various indvisible and divine powers areoriginated.