The simple practices of Forest Bathing and of ancient Qigong working with trees have great healing benefits, now widely documented in Japan: among other effects, stress hormone cortisol significantly decreased in test subjects after a walk in the forest. Ancient insights and current research note that the cells of the roots and rootlets of trees and our brain cells have similar functions and parallel structures: we are “inverted trees” with our brain on top while trees have their functional brain in their roots.