Ovulation occurs when a female ovary releases an ovum into the fallopian tube. Successful ovulation is necessary in order for people to reproduce. Typically, a woman is at her most fertile time during the few days on either side of her ovulation day. This is because the luteinizing hormone (LH), which is a chemical that triggers the release of an ovum, is at its highest production point. If a couple is trying to achieve conception, intercourse during these few days is important for reproduction purposes.
The timing of intercourse in relation to ovulation is considered to be important factor due to X and Y chromosome carrying sperm having different characteristics. Y-bearing sperm are faster swimmers but have a shorter life-expectancy than X-bearing sperm. So there’s no point in having intercourse with 4-5 days to go until ovulation as it’s likely that there’ll only be X-bearing sperm left. If you want a boy you need to have intercourse as close to ovulation as possible .
OV-Watch Fertility Predictor Starter Kit can help. It is a wrist-mounted, bio-sensing medical device that tracks a woman's individual body chemistry to find the 4 crucial days before ovulation-her most fertile days of the month. OV-Watch has a special processor and biosensor that takes readings from your skin every 30 minutes while you sleep. This advanced technology works differently from other ovulation prediction devices in that it tracks chloride ion levels as opposed to LH or estrogen surges. It allows you to be able to fully utilize all 6 days of fertility- the four most crucial fertile days of a woman's cycle before ovulation and the time during ovulation. With OV-Watch, there are no messy, urine strips and no complicated charts.

