Not sure why others do or do not program thier belief systems to include living on prana. There are a lot of documented prana eaters in India, they have been living on prana for a long time.
Jasmuheen at jasmuheen.com has a global prana program on her website.
I like the link, FOOD CHOICES at breatharian physiology link, see earlier posts.
FOOD CHOICES says if you eat non human fat, animal fat, you become like that animal whose animal fat you incorporate into your own body and temple.
Jasmuheens global prana feeding programs are at her webite. link below: