Final answer:
The frequency of sexual intercourse may affect the chances of conception. Couples who engage in coitus daily may have more difficulty conceiving than those who space it out to every other day.
Step-by-step explanation:
A couple who engages in daily sexual intercourse in order to increase the chances of early impregnation may actually have more difficulty conceiving than those who space out their sexual activity to every other day. This is because the woman's body temperature and cervical mucus undergo changes during ovulation, indicating the most fertile period for conception. If a couple has sex daily, they may miss this fertile period, reducing the chances of successful fertilization.