Or so they say. If you would like to comment on this story or anything else you have seen on Future, head over to our Facebook page or message us on Twitter. An Irish study published in the British Medical Journal examined 8, births at a Dublin hospital between and Closer to term, a heart rate of beats a minute is perfectly normal. But there is no reason why the sex of the baby should determine your mood. Some are just moving all the time, some tend to sleep a lot. But there is one indication, admittedly rather late on pregnancy, which could give you a clue.
Prenatal medical testing can indicate the sex of your child, the amount of fluid in your uterus, the weight of your baby before birth, and many other things.
Can you predict a baby’s sex from the size of the bump?
As fun as the guessing game might be, however, skull theory is for entertainment value only. There's no way to judge the sex of a fetus from the shape of a skull on a grainy ultrasound. To determine the sex of ancient remains of children and babies, researchers must turn to DNA analysis, Killgrove said. So, what's the most accurate way to determine your baby's sex? Get top stories and blog posts emailed to me each day.