There is no most effective exercise to induce labor at 39 weeks of pregnancy, you can go with the flow, or you can sit on a birthing ball, paddle your legs, climb the stairs, etc., so as to induce labor. 1. Sitting on a birthing ball: 39 weeks pregnant women, at this time, if there are contractions coming, want to promote the progress of labor, you can sit on a birthing ball, which will help the head of the fetus to fall and the mouth of the uterus to unfold. 2. Rowing leg exercise: pregnant women can hold their hands on the recliner, then the right leg fixes the left leg to row circles, and then change the leg to continue to do, through the rowing leg exercise, it can promote the descent of the fetal head and the process of labor. 3. Climbing stairs: Pregnant women in the 39th week of pregnancy, you can climb stairs to exercise the muscles of the thighs and buttocks, and help the fetus into the pelvis, so that the process of labor comes as soon as possible, but gradually, avoid overwork. In addition, the above exercise methods are only to assist in inducing labor, 39 weeks pregnant women should have to go to the hospital to wait for labor after signs of labor appear.