14 days If the menstrual cycle is regular, ovulation usually occurs about 14 days before the next menstrual period. The 5 days before and 4 days after the day of ovulation, together with the day of ovulation, are called the ovulation period. During this time, luteinizing hormone rises rapidly, stimulating the ovulation of the egg. At the same time, the cervical mucus becomes lubricated, making it easier for the sperm to meet the egg. 7 days This number is the effective time for conception during ovulation. Generally speaking, the egg does not survive for more than 3 days and the sperm does not usually survive in the woman’s body for more than 4 days, which means that the effective time for conception is usually about 7 days. 0.3 to 0.5 During ovulation, your body temperature will rise by 0.3 to 0.5. Ovulation usually occurs before or during the rise in body temperature. A woman’s basal body temperature generally varies with ovulation. During the first half of a woman’s menstrual cycle, the fluctuation of body temperature is below 36.6 degrees. After ovulation, it will shift to the second half of the menstrual cycle, and if the temperature rises indicating ovulation, after a high temperature period lasting about two weeks, the woman’s body temperature will decrease again. 17:00 – 19:00 This number is the best time of day to conceive. Italian scientists point out that scientific research has long found that hormones play a key role in influencing female conception, and that it allows most women to concentrate their ovulation in the afternoon between 5 and 7 pm. 5 to 10 sit-ups a day before conception to strengthen the rectus abdominis and improve your fertility. Weak rectus abdominis muscle strength is a sign of poor physical strength and is also related to the physiological function of the Ren and Uterus. This is why more exercise can enhance your pregnancy strength, which will help with the physical load of future pregnancies and births. A woman with a BMI of 24 has a high success rate in conception. An American study found that women with a BMI close to 24 had twice the chance of getting pregnant. What is your BMI? The formula is: BMI = weight (kg) รท height (m) 2, in fact, BMI of 24, is a slightly fat body, if your index happens to be 24, do not struggle to lose weight, maintain this figure, because it will make you more likely to conceive than others. 10% For every 10 kg increase in thin women, the chances of pregnancy will increase by 10% accordingly. That’s why it’s important to control your weight before pregnancy. You can set the most fertile standard weight as BMI=24, if it is <24, then gain weight appropriately, if it is >24, then lose weight appropriately. However, it is important to remember that being overly obese or too thin will reduce the chances of conception accordingly. 1.7% This is the chance of a twin woman conceiving twins again. Scientists have investigated families with twins and found that 4% of twins have twin mothers, while only 1.7% of twins have twin fathers. The genetic predisposition to conceive twins is mainly on the mother’s side, with a 1.7% chance of twin pregnancy in women who are twins themselves, and a 0.8% chance of twins in women who are not twins but whose parents are twins. If the mother is a twin, the chance of having twins is 1.7%. Men who smoke more than 30 cigarettes a day have more than 20% of deformed sperm, and the longer they smoke, the more deformed sperm they have. Sperm can be normalized only after six months of stopping smoking. If the couple or one of them smokes regularly before pregnancy, the harmful components in tobacco will enter the reproductive system through the blood circulation, and toxic effects will occur directly or indirectly. Therefore, couples who are preparing to get pregnant should quit smoking at least 3 months before conception.