Pregnant women often lying down has an impact on the fetus, unless there are symptoms of pre-eclampsia, such as when there is vaginal bleeding or abdominal pain, pregnant women need bed rest, which is conducive to the preservation of the fetus. If there are no symptoms of pre-eclampsia miscarriage, pregnant women often lying on the fetus is not conducive to development. Because the pregnant woman often lying, is not conducive to metabolism, is also not conducive to the absorption of nutrients, and the mood of pregnant women will also have an impact. After the pregnant woman moderate activity, for her nutrition, sleep, mood will be very good, are beneficial to the fetus. Pregnant women who lack exercise will also be affected during childbirth and may have difficulties in delivery, especially those who want to give birth naturally and may have a higher chance of difficult delivery.