Reproduction

• 10% of all human beings ever born are alive at this very moment.
• The earliest documented occurrence of a fetus yawning is at eleven weeks after conception.
• During a normal pregnancy, the average woman's uterus expands up to five hundred times its normal size.
• 99% of all maternal deaths (death from childbirth) occur in developing countries.
• Women who smoke take longer to conceive, suffer from infertility at higher rates, and have higher rates of miscarriage.
• Babies hiccup while still in the womb because the respiratory center of a developing child’s brain works just like that of an adult, even though they are not yet breathing air.