When we are pregnant to ourselves we are amazed at how our body is naturally programmed for reproduction.
We also wonder how we can bear, especially at the end of pregnancy, the 9, 12 or 15 kilos of weight we have extra. It is that the human body is a perfect machine. The woman adapts during pregnancy to spectacular changes that affect her stability and posture.
I read that a team of American researchers explains in the journal Nature the evolution of the lumbar region of the female spine different from the masculine one so that it is able to withstand in the best possible way the weight of the fetus.
They explain that when the man began to walk on two legs, his center of gravity shifted forward of the hips, so the skeletal and muscular structure of the woman had to adapt to her new posture erected when she was pregnant.
The key that we can develop our normal activities with such an added volume is found in the bottom of our column.
The lumbar curvature that women have covers three vertebrae, while in men it covers only two.
Being able to carry the extra weight we carry during pregnancy on three vertebrae allows us to increase the flexibility of that area of the spine, which can be up to 60% more than usual to compensate for the unbalanced weight of the baby and realign the center of gravity .
In addition, the lumbar region joints are larger and are arranged differently than in men, making it stronger to support the baby's weight during pregnancy and then be able to hold it in arms.
Can you imagine not being able to move because you are pregnant? I do not let myself be amazed at the intelligence of the human body that has had to adapt so that primitive women who were pregnant could move and thus ensure their survival.
