the "3 Essentials "..

Heaven, Man and Earth

Spirit, Mind and Body..

Chi, Essence and Nature..

but the 1st level is development of the Earthly "vehicle", the body.

No mater what level of spiritual development one strives for, without a healthy body, pain / discomfort and illness will continue to be a distraction and a deterrent from reaching higher levels of realization...

The Body/Mind creates unhealthy conditions and delusion that distracts the higher mind ..

The Sadhana is to maintain a healthy body, train the mind and transform the spirit so one can transcend the physical obstacles.

Then the Mind can become calm and clear and the Spirit can be light and vital, so Samahdi is attainable without ceaselessly fighting the physical...

Then man can unite with Heaven and Earth effortlessly

Freeing SELF:

If we can release the ego and really cast away our "selves", we may find the great life force of the universe that lives in all things.

It is in this way that the mind becomes truly free.

We are not hindered by anything and as we live in the world we are always in harmony with the Truth, and our actions give life to ourselves and all beings we come into contact with.

Inner Balance :

As we try to live in the world we are constantly overextending ourselves and depleting are energy sources..

Spiritually, mentally, emotionally and physically..

But trying to put everything back in place with external adjustments and by reacting to the demands of the world ultimately is frustrating and draining...

The re-balancing has to be done internally..