The belief that a baby’s heart rate can predict their gender is popular but has no scientific evidence. A baby’s heart rate varies during pregnancy, with no significant difference between male and female heart rates. A higher heart rate is more indicative of a child’s activity level than their gender.
Predicting the gender of a child is a fascination that has gripped people for a long time. Among the many beliefs surrounding this issue, one of the most popular is the use of the baby’s heart rate to determine the sex of the unborn baby. The basic theory is that a boy will have a heart rate below 140 beats per minute and a little girl will have a heart rate above 140 beats per minute. While this theory is widely believed, there is no scientific evidence that there is a connection between gender and a baby’s heart rate.
A baby’s heart rate actually varies during pregnancy. During the first few weeks of pregnancy, the baby’s heart rate is closely matched to the mother’s heart rate, which averages about 85 beats per minute. This rate slowly increases by an average of about three heartbeats per day. After about five weeks, the heart rates of both boys and girls have increased to about 175 beats per minute, and this average then slowly decreases during the rest of the pregnancy. Research has shown that the difference between the average male fetal heart rate and the average female fetal heart rate is very small – less than half a beat per minute – which has led researchers to conclude that there is no correlation between fetal heart rate and gender. .
A fetal heart rate is classified as normal when it is between 110 beats per minute and 180 beats per minute. A child’s heart rate could also change throughout the day. A child who is active or moving will generally have a higher heart rate than a child who is still or sleeping. Therefore, a child’s higher heart rate is actually more indicative of her child’s activity level than her gender.
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