If a pregnant woman puts her legs up against the wall in the early stages of pregnancy it will squeeze the pelvis, which will squeeze the uterus, and if it squeezes the abdomen in the middle or late stages of pregnancy it will squeeze the uterus, which will also squeeze the uterus, reducing local blood circulation and leading to uterine contractions under the stimulation of external forces causing the possibility of preterm abortion, induced miscarriage or preterm labor. So don’t stand your legs on the wall during the whole pregnancy, it’s very dangerous. During pregnancy, you can do some yoga for pregnant women, which will help you to have a smooth labor and delivery in the future, and it is still very desirable to do yoga under professional guidance.