Many people make the assumption that the physical body is just a “thing”.
It is nothing more than a physical part of them.
When they get sick they just pump medicine and drugs into their body and let the medicine do their work.
People should realise that physical body is beyond a “thing” or a “tool”
it has “intelligence”
(unless you assume intelligent beings are only those that have brain and can score well in maths 
)
it “knows” how to function.
Scientists have observed how our physical bodies work intelligently.
Animals and humans can evolve automatically to its surrounding for various purposes like being immune to certain substance or protecting themselves from predator.
Two examples are how super-pathogen is evolved and how human body become immune to lead (centuries ago the air is completely free from lead and it is very poisonous to people at the time)
There are reasons why ancient people stress on body-mind relationship.
At times we need to “communicate” with our physical bodies,
not just tossing medicines and drugs into it and expect it to work like a machine 
Ancient people keep themselves healthy by understanding their bodies and communicate with them.
The ancient Chinese and Yogis know that they can keep their bodies functioning well by controlling the flow of energy in their bodies with their mind.
Besides energy flow,
emotions are important in our health too.
Ancient Chinese know that our organs are associated with certain emotions and having extreme emotions will harm them.
Even skeptics who do not believe in alternative medicine have to succumb to the fact that our emotions can trigger certain chemicals in our bodies to create certain outcome.
There are medical proofs to show that negative emotions like fear and anger cause the body to release toxin. Some people look very old or wore off at young age because their mental state is harmful to their bodies.
To stay healthy,
it is important that we live in the natural flow and live in the NOW.
Realise that your body is not a machine. It is intelligent in its own way.
Even a cell in your body is powerful because a cell has the potential to become a complete organism.
We can “communicate” with our bodies with various methods.
Such communication is important to be healthy as mind and body are coexistence and they cannot function well if they are kept separated.
Will, Imaginations and Emotions are three important ways to do so.
I shall write about these 3 aspects (WIE) on my following posts.
