--- title: 'Gestational Diabetes Exercise: How Movement Helps Blood Sugar' slug: how-movement-helps-with-gestational-diabetes-2 lifeStage: pregnancy category: Movement medicalReviewer: "Dr Rebeccah Tomlinson, Private GP Women's Health: Menopause Speciality" reviewerId: 'https://blog.bloume.com/pregnancy/medical-board.md#dr-rebeccah-tomlinson' lastUpdated: '2026-06-18' primarySource: 'Treatment — Gestational diabetes (NHS)' --- # Gestational Diabetes Exercise: How Movement Helps Blood Sugar Being told that exercise can help manage gestational diabetes is one thing. Understanding why, and knowing how to move safely, is another. This article explains how staying active supports blood sugar in plain language, what moderate intensity looks like in pregnancy, and what to know about monitoring your blood sugar around exercise. Always check with your midwife, GP, or diabetes care team before starting or changing your exercise routine. **Q: How does exercise lower blood sugar in gestational diabetes?** A: When your muscles are working, they pull glucose from your bloodstream for energy, which brings your blood sugar down while you move. Afterwards, your muscles respond more readily to insulin, so your body keeps handling blood sugar more easily for a while once you have finished. Gestational diabetes exercise is one of the key ways to manage blood sugar, alongside changes to what you eat. Understanding how activity affects your levels, what to aim for in terms of intensity, and how to monitor your blood sugar around exercise can help you get the most from staying active during your pregnancy. > **WARNING**: Before starting or changing your exercise routine during pregnancy, speak to your midwife, GP, or diabetes care team. The information here is general health guidance and does not replace personalised clinical advice. ## Why does physical activity matter for gestational diabetes? Moving your body is one of the main ways to manage gestational diabetes, alongside changes to what you eat. It is often one of the first things suggested after a diagnosis. For you, these changes may be enough to keep blood sugar steady without medication, though this is not the case for every pregnancy. Keeping your blood sugar steady matters because a gestational diabetes diagnosis brings closer monitoring, and sometimes extra support during pregnancy and birth. When blood sugar runs high over time, the chance of complications goes up, including your baby growing larger than expected. ## How gestational diabetes exercise supports blood sugar control The way this works is simple. When your muscles are working, they need energy, and they pull glucose straight from your bloodstream to get it. That brings your blood sugar down both while you move and for a while afterwards. Once you have finished, your muscles also respond more readily to insulin, the hormone that helps keep blood sugar in balance. So your body keeps handling glucose more easily for a stretch of time after you stop, not only while you are moving. ## What moderate intensity looks like in pregnancy The general guidance in pregnancy is to aim for at least 150 minutes of moderate activity a week. You can split that into smaller chunks, like around 30 minutes on five days. Before you start or change anything, check with your midwife or diabetes care team about what suits your stage of pregnancy and how you are feeling. A simple way to judge moderate intensity is the talk test. You should be able to hold a conversation while you move. If you are too breathless to speak comfortably, you are probably working harder than you need to. Your heart rate will be up and you may notice light sweating, though you should not feel worn out. ### Suitable activities during pregnancy Good options at this level include brisk walking, swimming, stationary cycling, and pregnancy yoga or Pilates. A walk after a meal can be especially useful for keeping blood sugar steady, and it takes no equipment or planning beyond stepping outside. ### Activities to avoid during pregnancy Some activities carry risks that are specific to pregnancy and are best avoided. These include contact sports, skiing, and off-road cycling, where there is a chance of falling or a knock to your bump. After 16 weeks, exercises that have you lying flat on your back are also advised against. If you are not sure whether something is safe, check with your midwife or GP. ## Monitoring your blood sugar around activity Your care team will tell you how often to test your blood sugar. If you are managing gestational diabetes through diet and exercise, daily testing is standard, with a fasting reading before breakfast and a reading an hour after each main meal. They will also talk you through the target ranges to aim for. If you are managing with diet and exercise alone, or with Metformin, the chance of a hypo (low blood sugar) during exercise is low. If you are on insulin, exercise can raise that chance, so your care team should be part of planning your routine. They may ask you to test before and after exercise so you can see how different activities and lengths of time affect your own levels. > **WARNING**: If you are on insulin, speak to your diabetes care team before changing your exercise routine. Exercise can raise the chance of a hypo when you are on insulin, and your team can give you specific guidance on monitoring and what to do if your blood sugar drops. ### Managing blood sugar before and after exercise A small snack like fruit, yogurt (dairy or plant-based), or oatcakes before or after a planned session can help keep your blood sugar steady. It is also worth carrying a sugary snack while you move, in case your blood sugar drops, especially if you are on insulin. Your diabetes care team can suggest snack choices and hypo guidance that fit your treatment. --- If anything feels off during or after exercise, like dizziness, chest pain, shortness of breath, or your baby moving less than usual, stop and call your midwife or GP promptly. **Q: How does exercise lower blood sugar in gestational diabetes?** When your muscles are working, they pull glucose from your bloodstream for energy, which brings your blood sugar down while you move. Afterwards, your muscles respond more readily to insulin, so your body keeps handling blood sugar more easily for a while once you have finished. **Q: What types of exercise are safe with gestational diabetes?** Moderate activities like brisk walking, swimming, stationary cycling, and pregnancy yoga or Pilates are generally suitable. It is best to avoid anything with a high chance of falling or a knock to your bump, such as contact sports, skiing, and off-road cycling. After 16 weeks, exercises that have you lying flat on your back are advised against. Always check with your midwife or diabetes care team before starting or changing your routine. **Q: Do I need to monitor my blood sugar before and after exercise?** It depends on how your gestational diabetes is being managed. If you are on insulin, your care team may ask you to test before and after exercise, since activity can raise the chance of a hypo. If you are managing with diet and exercise alone, or with Metformin, that risk is lower, though your team will still guide you on your overall daily testing. **Q: How much activity should I aim for each week?** The general guidance in pregnancy is at least 150 minutes of moderate activity a week. You can spread that across the week in manageable chunks, such as around 30 minutes on most days. Your midwife or diabetes care team can advise on what suits you and how your pregnancy is going. **Q: What is a hypo and how do I prepare for one during exercise?** A hypo is low blood sugar (hypoglycaemia). If you are managing gestational diabetes through diet and exercise alone, the chance of one during activity is low. If you are on insulin, the chance is higher. Carrying a sugary snack while you exercise is a sensible precaution, and a small snack before or after a session can help keep your blood sugar steady. Ask your diabetes care team for hypo guidance that fits your treatment. ### Clinical Sources - [Treatment — Gestational diabetes (NHS)](https://www.nhs.uk/conditions/gestational-diabetes/treatment/) - [Information for patients: Diabetes and Pregnancy](https://www.ouh.nhs.uk/media/bq3hkcji/92717diabetes.pdf) - [Staying active with gestational diabetes](https://www.tommys.org/pregnancy-information/pregnancy-complications/gestational-diabetes/staying-active-gestational-diabetes) - [Gestational diabetes Risk assessment, testing and diagnosis](https://www.nice.org.uk/guidance/ng3/chapter/recommendations#gestational-diabetes) - [Gestational diabetes Risk assessment, testing and diagnosis](https://www.nice.org.uk/guidance/ng3/chapter/recommendations#gestational-diabetes) - [Treatment — Gestational diabetes (NHS)](https://www.nhs.uk/conditions/gestational-diabetes/treatment/) - [Information for patients: Diabetes and Pregnancy](https://www.ouh.nhs.uk/media/bq3hkcji/92717diabetes.pdf) - [Treatment — Gestational diabetes (NHS)](https://www.nhs.uk/conditions/gestational-diabetes/treatment/) - [Staying active with gestational diabetes](https://www.tommys.org/pregnancy-information/pregnancy-complications/gestational-diabetes/staying-active-gestational-diabetes) - [Information for patients: Diabetes and Pregnancy](https://www.ouh.nhs.uk/media/bq3hkcji/92717diabetes.pdf) - [Staying active with gestational diabetes](https://www.tommys.org/pregnancy-information/pregnancy-complications/gestational-diabetes/staying-active-gestational-diabetes) --- Reviewed by Dr Rebeccah Tomlinson, Private GP Women's Health: Menopause Speciality | [Medical Board](https://blog.bloume.com/pregnancy/medical-board.md) | June 2026