An ovulation calendar can be set up to help increase your chances of a particular gender baby. Actually, methods or predicting or influencing the sex of your future child go back thousands of years. For example, a Chinese Gender Calendar was discovered in an ancient royal tomb. Supposedly it would help a Chinese couple select their child’s gender based on the age of the mother when compared with the month of conception.

Couples looking to conceive a particular gender child have all sorts of theories available, as well as a little bit of science. In reality, almost any method of determining gender has at least a 50-50 chance of success.

But an ovulation calendar may be able to help you predict when the time is optimum for conceiving a boy or a girl. An ovulation calendar or conception calendar identifies those days when a woman’s egg and a sperm of the desired gender are most likely to connect.

Most of these calendars are prepared with a twelve-month duration, since trying to conceive only on certain days can make conception take a little longer.

According to one theory, the closer a woman conceives to ovulation, the better her chances of having a boy. This is because the y-sperms, which will produce a boy, are smaller and faster than the x-sperms. At or near ovulation the sperm will have a longer way to go and the faster swimmers will tend to get there first, resulting in a baby boy.

For girls, those little x-sperms may not be as fast, but they’re bigger and stronger than the y-sperms. Therefore, according to most ovulation calendars, you’d want to have sex two or three days before ovulation to increase your chances of having a girl.

Using this method, the y-sperms (for boys) will tend to die first because they’re weaker. With no egg available for fertilization, the majority of sperm left alive at the time the egg is released will be the x-sperms, and the odds of conceiving a female baby are increased.

Of course, no method has yet been designed that’s fool-proof. Even using the ovulation calendar to help determine the gender of your baby, you need to be prepared for the opposite outcome.

There are other theories about helpful items for determining gender. These range from sexual position to the mother’s diet to whether the father should wear boxers or briefs. But the ovulation calendar is perhaps the best-known method, since it works in conjunction with what is already known about male and female sperm.

Also, ovulation calendars tend to work best in predicting gender when the mother’s cycles are regular and of a standard duration. Women who have irregular cycles, longer than normal or shorter than normal cycles, will tend to have less success with a gender-specific ovulation calendar.

So if you’ve got your heart set on a baby boy or a baby girl, look into charting an ovulation calendar. Then determining the gender of your baby just takes practice, practice, practice.