As giraffes helped the man to go into space

The sensation of weightlessness for astronauts - is both a blessing and a curse. Canadian astronaut Chris Hadfield said that human bodies are adapted to life in conditions of gravity, when the blood flows to the legs first, and then the heart pumps it to the head. If gravity ceases to operate, the blood does not flow to the legs - a big part of the "pumped" heart-to-head, which is not very beneficial effects on the whole organism.



In addition, the blood vessels in the lower part of the body in a weightless not used as extensively as in the world, however over time and lose tone muscles begin to atrophy. When an astronaut returns to Earth, it is because of the increased gravity blood begins to flow to the legs too quickly, which often leads to bouts of dizziness and fainting.



In 1980, psychologist Alan Hargens (Alan Hargens) and his colleagues at NASA have noticed that shortly after the birth of the blood vessels in the legs little giraffe thicken quickly, allowing them to start walking in the first hour after birth. This discovery has helped improve the efficiency of the invention known as the "device providing a negative pressure on the lower part of the body," imitating in space close to the ground conditions, and prevent the loss of consciousness in astronauts returning to earth.

via factroom.ru