I think 2 things

1. sleeping on the ground is good for your back- or near the ground on a flatter surface
2. And this is the part that had me inspired by you- getting closer to the earth is really the key to our coming back to some sort of cultural sanity- of human sanity- forget the cultural aspect

Walking barefoot on the beach, or going to the mountains and hiking until you find the spot where the light filters through the trees branches at such an angle that your heart begins to expand and the soul of your existence begins to pray without words
That's the kind of thing that sustains the ones in the blacktop jungle