As per the previous birth karma's, Brahma decides what will be duration of our life or how long we will live. My question is,Brahma uses which unit to decide our life time. For example: At current time our unit is year, hours, minutes etc. If we decide to do any work with in time limit then we decides something like this.. I will do this word in 1day/1hour/5 min.
But Brahma sure(as per me) don't use to follow humans year and hours unit to decide our life's duration. So which unit he uses to decides our life duration? Some says breath is the unit. How many breath we will take in our life is use to determine by Brahma. But my doubt here is that If we hold our breath, for ex. some yogas and tapas are there in which we need to hold our breath. So by doing this our life time will get increase since we are taking long to complete our no. of predetermined breaths. And if someone breath fast (some people usually does) or takes short breaths then he/she actually shorting his/her life?