The human spirit is the life wire of the soul and body. Lk.2:40,52
So, feed the spirit to pattern the soul and strengthen the body. Gal.6:7-9.
We live from inside out, it is what goes on within that reflects on the outside.
The spirit is the hook on which the soul and body hangs.
The healthiness of the spirit determines the well being of the soul and body. Show me a deep spiritual man and I will show you a mentally literate and buoyant man and a physically agile man. Is.11:1-3; Rom.8:11.