This isn't real. Everything is real, including unreal things like nothing.

Marduk - a god from ancient Mesopotamia and patron deity of the city of Babylon.
Image: Nineteenth-century engraving by Gustave Doré, showing the scene from "Bel and the Dragon" in which Daniel reveals the deception of the Babylonian priests of Bel, a syncretized form of Marduk.
So what is koshi? That’s a little tough, because koshi not a clearly defined medical term. Koshi includes the lower back, hips, waist and pelvis. The first thing to practice is just walking while maintaining a stable, connected koshi. When you walk, do your head and shoulders stay over your koshi? Or are you a citizen of the 21st century whose head is permanently tilted forward and down, ready to check your iPhone at a moment’s notice?
Recent work lead by Omer Hazon and Pablo Jercog reveals that, due to noise correlations, mouse hippocampus only encodes space with a limited resolution of 10cm (about the size of the mouse) & only ~1000 neurons are needed to decode space to this limit.
"All types of knowledge ultimately means self knowledge" - Bruce Lee
Meet Your Interstitium, A Newfound 'Organ'
The new organ is a thin layer of dense connective tissue throughout the body, sandwiched just under our skin and within the middle layer of every visceral organ. The organ also made up all the fascia, or the thin mesh of tissue separating every muscle and all the tissue around every vein and artery, from largest to smallest. What initially seemed to be a solid, dense, connective tissue layer was actually a complex network of fluid-filled cavities that are strong and flexible, yet so tiny that they escaped the attention of the brightest scientific minds for generations.