I think Sunlight Diet should redirect here. Noone knows the expression HRM Phenomenon. Besides there is no Sunlight Diet article yet.
I actually got to this page by a search for the hrm phenomenon. Also I read a brief description using basically the same words. This has to be checked for accuracy or at least a link to any of those "studies"
Also there is more info here: http://en.wikipedia.org/wiki/Breatharianism#Hira_Ratan_Manek