There are so many myths surrounding predicting your baby's gender. You may have heard that you can use your baby's heart rate to determine whether you are having a boy or a girl. The theory is that a girl's heart will be faster (over 140 beats per minute) and a boy's heart rate will be slower (under 140 beats per minute).
But is it true?
Unfortunately, this is a myth. You cannot determine your baby's sex by counting or listening to his/her heart rate. The fact is that this myth has actually been around for some time and scientific studies have proven it to be incorrect.
The heart rate of your baby fluctuates as they grow and as they move. Heart rates start out slower, and then by 8-10 weeks run in the range of 170-200 BPM (beats per minute). As your approach mid-pregnancy the average heart rates run between 120 - 160 BPM. If your baby moves, his or her heart rate goes up, just as your heart rate does with movement. However, none of these is related to the sex of your baby.