Exercise During Pregnancy
Frequently Asked Questions: Pregnancy
If you are healthy and your pregnancy is normal, it is safe to continue or start regular physical activity. Physical activity does not increase your risk of miscarriage, low birth weight, or early delivery. However, it is important to discuss exercise with your obstetrician or other member of your health care team during your early prenatal visits. If your health care professional gives you the OK to exercise, you can discuss what activities you can do safely
Women with the following conditions or pregnancy complications should not exercise during pregnancy:
- Certain types of heart and lung diseases
- Cervical insufficiency or cerclage
- Being pregnant with twins or triplets (or more) with risk factors for preterm labor
- Placenta previa after 26 weeks of pregnancy
- Preterm labor or ruptured membranes (your water has broken) during this pregnancy regular physical activity
- Preeclampsia or pregnancy-induced high blood pressure
- Severe anemia
Regular exercise during pregnancy benefits you and your fetus in these key ways:
- Reduces back pain
- Eases constipation
- May decrease your risk of gestational diabetes, preeclampsia, and cesarean delivery
- Promotes healthy weight gain during pregnancy
- Improves your overall general fitness and strengthens your heart and blood vessels
- Helps you to lose the baby weight after your baby is born
Ideally, pregnant women should get at least 150 minutes of moderate-intensity aerobic activity every week. An aerobic activity is one in which you move large muscles of the body (like those in the legs and arms) in a rhythmic way. Moderate intensity means you are moving enough to raise your heart rate and start sweating. You still can talk normally, but you cannot sing.
Examples of moderate-intensity aerobic activity include brisk walking and general gardening (raking, weeding, or digging). You can divide the 150 minutes into 30-minute workouts on 5 days of the week or into smaller 10-minute workouts throughout each day.
If you are new to exercise, start out slowly and gradually increase your activity. Begin with as little as 5 minutes a day. Add 5 minutes each week until you can stay active for 30 minutes a day.
If you were very active before pregnancy, you can keep doing the same workouts with your obstetrician’s approval. However, if you start to lose weight, you may need to increase the number of calories that you eat.
Your body goes through many changes during pregnancy. It is important to choose exercises that take these changes into account:
- Joints—The hormones made during pregnancy cause the ligaments that support your joints to become relaxed. This makes the joints more mobile and at risk of injury. Avoid jerky, bouncy, or high-impact motions that can increase your risk of being hurt.
- Balance—The extra weight in the front of your body shifts your center of gravity. This places stress on joints and muscles, especially those in your pelvis and lower back. Because you are less stable and more likely to lose your balance, you are at greater risk of falling.
- Breathing—When you exercise, oxygen and blood flow are directed to your muscles and away from other areas of your body. While you are pregnant, your need for oxygen increases. This may affect your ability to do strenuous exercise, especially if you are overweight or obese.
There are a few precautions that pregnant women should keep in mind during exercise:
- Drink plenty of water before, during, and after your workout. Signs of dehydration include dizziness, a racing or pounding heart, and urinating only small amounts or having urine that is dark yellow.
- Wear a sports bra that gives lots of support to help protect your breasts. Later in pregnancy, a belly support belt may reduce discomfort while walking or running.
- Avoid becoming overheated, especially in the first trimester. Drink plenty of water, wear loose-fitting clothing, and exercise in a temperature-controlled room. Do not exercise outside when it is very hot or humid.
- Avoid standing still or lying flat on your back as much as possible. When you lie on your back, your uterus presses on a large vein that returns blood to the heart. Standing motionless can cause blood to pool in your legs and feet. These positions may cause your blood pressure to decrease for a short time.
Experts agree these exercises are safest for pregnant women:
- Walking—Brisk walking gives a total body workout and is easy on the joints and muscles.
- Swimming and water workouts—Water workouts use many of the body’s muscles. The water supports your weight so you avoid injury and muscle strain.
- Stationary bicycling—Because your growing belly can affect your balance and make you more prone to falls, riding a standard bicycle during pregnancy can be risky. Cycling on a stationary bike is a better choice.
- Modified yoga and modified Pilates—Yoga reduces stress, improves flexibility, and encourages stretching and focused breathing. There are prenatal yoga and Pilates classes designed for pregnant women. These classes often teach modified poses that accommodate a pregnant woman’s shifting balance. You also should avoid poses that require you to be still or lie on your back for long periods.
If you are an experienced runner, jogger, or racquet-sports player, you may be able to keep doing these activities during pregnancy. Discuss these activities with your obstetrician or other member of your health care team.
While pregnant, avoid activities that put you at increased risk of injury, such as the following:
- Contact sports and sports that put you at risk of getting hit in the abdomen, including ice hockey, boxing, soccer, and basketball
- Activities that may result in a fall, such as downhill snow skiing, water skiing, surfing, off-road cycling, gymnastics, and horseback riding
- Hot yoga” or “hot Pilates,” which may cause you to become overheated
- Scuba diving
- Activities performed above 6,000 feet (if you do not already live at a high altitude)
Whether you’re a seasoned athlete or a beginner, watch for the following warning signs when you exercise. If you have any of them, stop and call your obstetrician:
- Bleeding from the vagina
- Feeling dizzy or faint
- Shortness of breath before starting exercise
- Chest pain
- Muscle weakness
- Calf pain or swelling
- Regular, painful contractions of the uterus
- Fluid gushing or leaking from the vagina
Exercising after your baby is born may help improve mood and decreases the risk of deep vein thrombosis (DVT), a condition that can occur more frequently in women in the weeks after childbirth. In addition to these health benefits, exercise after pregnancy can help you lose the extra pounds that you may have gained during pregnancy
Anemia: Abnormally low levels of red blood cells in the bloodstream. Most cases are caused by iron deficiency (lack of iron).
Cerclage: A procedure in which the cervical opening is closed with stitches to prevent or delay preterm birth.
Cervical Insufficiency: A condition in which the cervix is unable to hold a pregnancy in the second trimester.
Cesarean Delivery: Delivery of a fetus from the uterus through an incision made in the woman’s abdomen.
Complications: Diseases or conditions that happen as a result of another disease or condition. An example is pneumonia that occurs as a result of the flu. A complication also can occur as a result of a condition, such as pregnancy. An example of a pregnancy complication is preterm labor.
Deep Vein Thrombosis (DVT): A condition in which a blood clot forms in veins in the leg or other areas of the body.
Dehydration: A condition that happens when the body does not have as much water as it needs.
Gestational Diabetes: Diabetes that starts during pregnancy.
Hormones: Substances made in the body that control the function of cells or organs.
Obstetrician: A doctor who cares for women during pregnancy and their labor.
Oxygen: An element that we breathe in to sustain life.
Placenta Previa: A condition in which the placenta covers the opening of the uterus.
Preeclampsia: A disorder that can occur during pregnancy or after childbirth in which there is high blood pressure and other signs of organ injury. These signs include an abnormal amount of protein in the urine, a low number of platelets, abnormal kidney or liver function, pain over the upper abdomen, fluid in the lungs, or a severe headache or changes in vision.
Preterm: Less than 37 weeks of pregnancy.
Uterus: A muscular organ in the female pelvis. During pregnancy, this organ holds and nourishes the fetus.
If you have further questions, contact your obstetrician–gynecologist.
FAQ119. Copyright July 2019 by the American College of Obstetricians and Gynecologists
This information is designed as an educational aid to patients and sets forth current information and opinions related to women’s health. It is not intended as a statement of the standard of care, nor does it comprise all proper treatments or methods of care. It is not a substitute for a treating clinician’s independent professional judgment. Read ACOG’s complete disclaimer.