I'll tell you one thing (no idea how related but i believe some what) since I quit smoking I haven't even really had any cravings. I do think part of it is to do with input of all kinds into the body.

There are many studies that show where theres an adiction there is almost always a depression.

Its all circles and cycles I think in one way and balance in another.

The healthier the body the easier to mentally feel good. It all works trogether, mental effects physical and emotional. Emotional effects mental and physical. Physical effects mental and emotional.

Back to balance.

You can never be as strong physically if you are weak mentally and emotionally as someone who is strong in all three.

The body mind connections are physical and real.

Thoughts and feelings are essentially physical (chemical/biochemical). So it all effects all of it.

"Neural stimulation, which affects primarily hypothalamic-limbic-pituitary curcuits, impacts the autonomic nervous system, the hormone cascade and the immune system."

I believe that the waves flow through are body from stimulation of all our senses.

Just like nutrition-put good in and it helps put bad in and it hurts.