A great Sanskrit poet said:

"The first among all spiritual practices is the care of the body".

In Vedanta, the human body, as we see it, is considered the gross body, which food helps to

build. Attached to it, is a more powerful subtler body, which is the assimilation of the life force,

the nervous system and the organs of cognition.

Here's where resides the spirit of pervading power.

The Vedic mantra says,

"If food is pure, the mind is in poise.
When the mind is in perfect poise, there develops the capacity
of retaining subtle truths by the mind".