I thought this story was pretty entertaining considering Gina is only days away from her scheduled date to induce. I've been wondering how she walks.
Study: Evolutionary Change Lets Pregnant Women Stand Upright
WASHINGTON — With all that growing weight up front, how is it that pregnant women don't lose their balance and topple over?
Scientists think they've found the answer: There are slight differences between women and men in one lower-back vertebra and a joint in the hip, which allow women to adjust their center of gravity.
This elegant evolutionary engineering is seen only in female humans and our immediate ancestors who walked on two feet, but not in chimps and apes, according to a study published in Thursday's journal Nature.
"That's a big load that's pulling you forward," said Liza Shapiro, an anthropology professor at the University of Texas and the only one of the study's three authors who has actually been pregnant. "You experience discomfort. Maybe it would be a lot worse if [the design changes] were not there."
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