Many mothers-to-be want to continue their exercise regimens during pregnancy, and overall this is a smart idea. Working out has been shown to prevent serious condition likes gestational diabetes or high-blood pressure during pregnancy. However, when it comes to exercises that require jumping, you may want to take some precautions, especially in the late stages of your pregnancy.
For the most part, jumping poses no health risks to you or your baby, but it may cause you to go into labor prematurely. As you come down from a jump, the weight of your inertia places pressure on your uterus and cervix, which can actually trigger contractions. This is especially true when you land with a wide stance, as opposed to with your legs close together. In the early stages of your pregnancy, premature contractions are not a big risk, but the likelihood that they will occur increases as your due date draws nearer.
Additionally, if you experience any complications during your pregnancy it may be best to avoid not only jumping but any form of exercise until you have a chance to meet with your doctor. He or she will be able to assess your unique situation and give you a more informed answer.