Have you ever had the experience of feeling dizzy when standing up from a squatting position? That is due to the lack of blood supply in the brain caused. But there is a creature in this world is perfect to overcome this obstacle, that is, since the long-necked Oba – giraffe with cute attributes An adult giraffe’s neck is about 1.8 meters long, the blood has to be from the distant heart, constantly climbing upward to reach the brain. It is reasonable to say that giraffes should be suffering from high blood pressure, but they seem to live quite well, and in the mood to be cute. Not only can they hold their heads high and low unharmed, but they can also swing their necks and fight! But you have to know that giraffes each completed a head-down action height difference of 6 meters, if the human has long been rested. Can so easily handle their big long neck, how do they do it? Small but powerful heart This long section of the blood circulation system in the giraffe’s body relies on a small but powerful heart to overcome the hydrostatic pressure generated by the high column of blood in the neck through a strong heartbeat. The more powerful the heart beat, the more it leads to high blood pressure. The miraculous valvular system An adult giraffe has twice the blood pressure of a human in the heart area, yet the blood pressure values in its head are almost identical to those of a human. This is because the valve system in the giraffe’s jugular vein prevents blood from flowing back and building up, keeping the blood pressure in the head at a low value. Thick blood vessel walls The thick blood vessel walls in the giraffe’s neck prevent blood from leaking and constricting, and also expand to accommodate blood volume. The stiffened collagen fibers act like an astronaut suit by shifting gravity to aid blood flow. As the giraffe slowly grows and its neck gets longer, these fibers become thicker and thicker as a way to strengthen the control of high blood pressure. The giraffe’s neck contains a mystery, and our researchers are studying this “mystery” to find a cure for hypertension and heart disease. We believe that someday in the future, humans can overcome these diseases with the “help” of giraffes!