Your concept is not dumb at all. In fact, it has been an essential part of all mystical philosophies I've ever heard of, although it's name changes depending on the language of the philosophy.
Many Western philosophies describe this energy as "astral":
- of, connected with, or resembling the stars
- of or relating to a supposed nonphysical realm of existence to which various psychic and paranormal phenomena are ascribed, and in which the physical human body is said to have a counterpart
Early 17th century: from late Latin astralis, from astrum ‘star’
Vedic mysticism uses the Sanskrit terms "prana" and "kundalini" instead of "astral", and refers to the corresponding subtle body as either the "pranamaya kosha" or simply the "sukshma sharir".
The astral dimension is subtler than the physical dimension, meaning it cannot be sensed by the ordinary physical senses, and is often refered to as the astral plane. In this plane, humans are said to have astral bodies made of astral energy. People are said to be able to interact with the astral plane with their astral body, and even travel therein via astral projection.
One Of Many Planes
The astral or subtle plane is considered part of a much larger cosmology consisting of various numbers of planes, both in western and eastern mysticism. Each plane is composed of it's own unique type of matter and humans are said to have bodies made of this matter in each plane. Meditation and various accompanying techniques, such as yoga, help the disciple/practioner towards enlightenment (termed "moksha" in Sanskrit) by increasing the mind/body coordination between the physical self and waking state consciousness and the subtle bodies.
I've been researching this area of study a lot since 1990. I've researched and tried many different schools of thought and styles of meditation. However, all failed to fulfill my eagerness for sustainable practical results, until I found Maharishi Mahesh Yogi's meditation techniques and his Vedic Science techniques. I was so impressed with the results I spent the next 13 years studying and practicing them full-time. The form of meditation taught by Maharishi is called Transcendental Meditation and I highly recommend it.