When the ancient queen was pregnant and walking, she suddenly had a stomachache. Pregnancy (or pregnancy, concretization) means that there are one or more fetuses or embryos in female mammals (including humans). Human pregnancy is the most detailed study among mammals. Maternal yoga is mild, which has a good effect on enhancing cardiopulmonary function, promoting blood circulation and metabolism, and can alleviate fatigue caused by increased oxygen demand during pregnancy and asthma caused by poor breathing.