Before the third trimester of pregnancy is recommended to rest more, there is no abnormal situation can be appropriate walking, but should not be too much walking. The first trimester of pregnancy is an important period of embryonic differentiation and formation, this stage of the gestational sac in the uterus is not stable, in order to better growth and development of the embryo, usually more bed rest. The first trimester of pregnancy is not abnormal in all aspects of the body, but also can not be a long time in bed, should be appropriate to get out of bed to walk around, walking time should not be too long, try not to let themselves too tired. In the first trimester of pregnancy, there is the phenomenon of pre-eclampsia, vaginal bleeding is more, it is recommended that bed rest is the main, usually try to minimize the bed walking. After the third trimester, the placenta and amniotic fluid are formed, and the development of the fetus in the uterus is relatively stable, so there is no need to stay in bed for a long time if there is no abnormality.