It is called Kundalin i. The energy would flow through chakras which are actually nerves or resistors in the spine. For the sake of our study, let us consider the higher mind as heaven. The human brain . From the brain comes all those things that can make life a wonder.
Manna is from mannitol, a sugary substance.
Since we are considering the human brain as the source, let us look at brain sugar. Brain sugar is galactose, Galact means milk. Thus brain sugar is a milky sugary substance. And that ye may prolong your days in the land, which the LORD sware unto your fathers to give unto them and to their seed, a land that floweth with milk and honey. Amazing isn't it.