I just checked out that trailer, thanks for mentioning it. You where right I am interested. Learned something knew and I share that with you below.

"In Collier’s Weekly, February 9, 1901 Nicola Tesla one of history’s most brilliant minds and prolific inventors wrote “Why should a living being not be able to obtain all the energy it needs for the performance of its life functions from the environment, instead of through consumption of food?“"

https://lightdocumentary.space/2016/03/18/how-breatharianism-works-the-science-of-light-and-water/

Thanks!