Safe exercise during pregnancy in Singapore: how much is enough, running, squats and lifting, and exercising in the heat

Safe exercise during pregnancy is encouraged in Singapore for most women with an uncomplicated pregnancy. Singapore's guidelines on physical activity in pregnancy, launched at KKH in 2020, recommend at least 150 minutes of moderate-intensity activity a week, which is about 30 minutes on five days. Brisk walking, swimming, stationary cycling, low-impact aerobics, prenatal yoga and light strength work all count. Exercise at a pace where you can still talk but can't sing, avoid contact sports, falls and overheating, and stop and call your doctor if you have bleeding, fluid leaking, dizziness, chest pain or painful contractions. Ask your obstetrician first if your pregnancy is high-risk or you're new to exercise.

Why staying active is worth the effort

When you already feel wrung out, a workout can sound absurd, yet gentle, regular movement usually gives energy back. HealthHub says women who exercise during pregnancy sleep better and have more energy. SGH's obstetricians list relief from backache, constipation, bloating and swelling, help in preventing or treating gestational diabetes, and better mood, posture and sleep.

KKH says regular activity in pregnancy also limits weight gain and improves mental health. Despite that, a KKH-led study found 70% of pregnant women surveyed in Singapore did no moderate or vigorous activity at all. If you already have gestational diabetes, a short walk after meals often helps with blood sugar, though the details should come from your care team. See our guide to a gestational diabetes diet in Singapore.

How much, and how hard? The talk test

The local guidelines ask healthy women with uncomplicated pregnancies for at least 150 minutes of moderate-intensity activity a week. SGH's advice is 30 minutes on five to seven days each week, and HealthHub says shorter bouts spread across the week are fine if an hour is impossible. A brisk walk to the MRT, a lunchtime stroll and an evening swim add up.

You don't need a heart-rate monitor. HealthXchange's rule is to exercise at a pace where your breathing quickens but you aren't out of breath, so you can hold a conversation but can't sing. If you can't finish a sentence, ease off. SGH adds that pregnancy isn't the time to exercise to lose weight. If you were very active before pregnancy and want to keep training harder, agree the details with your doctor.

How much exercise is too much?

There's no single upper limit in the Singapore guidance, so the signals come from your body. SGH's Dr Tan Wei Ching says strenuous exercise can make the womb tighten and bleed, and that the intensity should come down as the pregnancy goes on, because the extra weight makes the same workout harder. HealthHub's rule is that exercise in pregnancy should never feel painful. You're overdoing it if:

• You can't finish a sentence. The talk test above is the simplest check: if you can't hold a conversation, slow down.
• Your bump tightens again and again during or after a session, or anything hurts. Stop, rest and see whether it settles.
• You feel wiped out for the rest of the day, or dizzy and hot. Shorten the next session and pick a cooler time.
• You're losing weight. SGH says pregnancy isn't the time to exercise to lose weight, and the American College of Obstetricians and Gynecologists (ACOG) says that if you start losing weight while training you may need to eat more.

If you trained hard before pregnancy, ACOG says you can usually keep doing similar workouts with your obstetrician's approval. Agree the details at an early check-up, and expect to scale back as the bump grows.

Which cardio suits each trimester

The table brings together SGH's trimester advice and HealthHub's guidance on low-impact exercise.

Where to walk in Singapore

HealthHub suggests walking in the national parks, where NParks lists how long each walk takes and where the rest points are. Start slowly while your body adjusts to the extra weight, then build up to a brisk pace. Tree-lined park connectors keep you out of direct sun, and a mall walk on a wet day still counts.

Swimming at Singapore pools

HealthHub calls a 30-minute swim a good low-impact start, because swimming isn't weight-bearing and the water relieves the load on your joints. ActiveSG's public pools are the cheapest place to swim, and our guide to public swimming pools in Singapore lists the complexes and how entry works. Most public pools are outdoors, so swim early in the morning or late in the afternoon to stay out of the strongest sun.

HealthHub's precautions for pregnant swimmers: walk slowly around the pool because wet floors are slippery, step in instead of diving or jumping, keep your breathing steady, and eat and drink well before and after. Skip the jacuzzi: SingHealth warns that hot tubs and saunas raise your core temperature, which can harm the developing baby's spine and brain.

Running while pregnant

If you were a runner before, you don't have to stop. SGH's obstetricians say runners should be able to keep running during pregnancy, with small adjustments as it goes on. By the third trimester many women find running uncomfortable and switch to swimming, walking or water aerobics, and SGH advises avoiding ballistic movements such as jumping and running late in pregnancy because loosened ligaments make injury more likely. If you weren't running before, pregnancy isn't the time to start; brisk walking gives you the same benefit with less strain.

• Run at talk-test pace and cut your distance as the weeks go by.
• Pick flat, even routes such as park connectors. Your centre of gravity shifts as the bump grows, which HealthHub says makes balance harder, so trails and uneven pavements carry more fall risk.
• Go out early in the morning or after sunset, and carry water.
• Wear a supportive sports bra. ACOG says a belly support belt may make walking or running more comfortable later on.
• Stop if you leak urine, feel pelvic or groin pain, or have any of the warning signs below. Leaking is common, and the pelvic floor exercises in the section below help.

Activities that are generally safe

Most of what suits pregnancy needs no gym membership. A pair of shoes, a public pool, a shaded park connector or a patch of living-room floor will do.

• Prenatal yoga and Pilates help your flexibility and breathing and support your core. Pick prenatal classes, tell the instructor you're pregnant, and avoid hot yoga because of the overheating risk. SGH says not to try new, advanced postures in the second trimester. Our guides to prenatal yoga and prenatal Pilates go through each by trimester.
• HealthHub's home routine ideas include chair squats, wall sits and arm curls. Keep weights light, move slowly and don't hold your breath.
• Warm up and cool down every session. HealthHub suggests marching on the spot for a few minutes before a walk.

Pregnancy hormones loosen your ligaments to prepare for birth, so SGH warns of a higher risk of injury from jerky or bouncy movements, especially in the third trimester.

Squats, lunges and lifting

Strength work is welcome in pregnancy. SGH says it makes muscles stronger and helps prevent some of the common aches, and HealthHub's home routine includes chair squats, wall sits and arm curls. A few rules keep it safe:

• Squats: use bodyweight or light weights, with a chair behind you or a wall at your back, and only go as low as feels comfortable.
• Lunges and one-leg moves: hold a wall or chair. HealthHub says balance exercises should be done with support nearby to prevent falls.
• Breathing: keep it steady and continuous, as HealthHub advises, and if you catch yourself holding your breath to push a weight, it's too heavy.
• Position: from the second trimester, SGH suggests sitting down to lift weights, because standing still for long can drop your blood pressure, and avoiding exercises on your back after 16 weeks.
• Core: skip full sit-ups and crunches once the bump grows, and use the gentle work in the pelvic floor and core section below.

How much can I lift?

No Singapore guideline we found sets a weight limit in kilograms for lifting in pregnancy. The advice is about how you lift. KKH's back-care tips are to watch your position when lifting, and the strength-work rules above apply to shopping bags, laundry and toddlers too. Keep the load close to your body, bend your knees rather than your back, and break a heavy load into smaller trips. If your job involves heavy or frequent lifting, ask your doctor what's safe for you and raise it with your employer.

Pelvic floor and core: gentle does it

Your pelvic floor is the sling of muscles that supports your bladder, womb and bowel, and it carries a growing load through pregnancy. Pelvic floor exercises, sometimes called Kegels, involve drawing up and squeezing as if stopping the flow of urine, then fully relaxing. Starting the habit now helps your recovery after birth.

As the bump grows, the tissue down the middle of your tummy stretches. From the second trimester, skip strong crunches and full sit-ups and use the gentle, breath-led core work taught in prenatal Pilates. If you see a ridge or dome down the centre of your tummy during a move, stop and pick a gentler option.

What to avoid, and why

• Contact sports such as football and basketball, where a knock to the tummy is possible. SingHealth also lists racquet games because of the risk of falls.
• Activities with a high fall risk, such as gymnastics, horse riding, skiing and road or off-road cycling, because your centre of gravity keeps shifting.
• Scuba diving, which SGH says carries a risk of decompression sickness.
• Lying flat on your back, particularly after 16 weeks, SGH says, because the bump presses on major blood vessels and you can feel faint.
• Overheating from hard effort, hot rooms or Singapore's midday sun. It gets its own section below.

Beating the heat: exercising in Singapore's climate

Heat is the biggest practical problem for staying active while pregnant here. SGH says overheating can be a problem, so wear cool clothing and drink plenty of water, and HealthHub warns against walking under the mid-day sun because your body overheats easily during exercise. ACOG goes further: don't exercise outdoors when it's very hot or humid.

• Check the heat stress level before a long walk or run. The Meteorological Service Singapore publishes it for stations across the island, based on the Wet Bulb Globe Temperature, which counts humidity, wind and sun as well as air temperature. The Ministry of Health's advisory on that page applies to long outdoor activity in direct sun.
• Move in the early morning or after sunset, and pick shaded routes. NParks lists how long each park walk takes and where the rest points are, which HealthHub suggests using to plan breaks.
• Drink water before, during and after a session; ACOG lists dizziness, a racing or pounding heart, and small amounts of dark yellow urine as signs of dehydration.
• Wear loose, light-coloured clothing and a supportive sports bra.
• Have an indoor backup for hot, rainy or hazy days: a pool, a gym treadmill, a stationary bike or a mall walk.
• If you feel overheated, dizzy or unwell, stop, get into shade or air-conditioning, sip water and cool down.

Our guide to surviving pregnancy heat in Singapore has more on staying cool day to day.

Warning signs to stop and seek help

HealthHub's rule is that pregnancy exercise should never feel painful, and that you should stop at once if an activity gets too strenuous or puts pressure on your joints. HealthHub's guide to being fit in pregnancy lists the signs that mean stop and see your doctor, and ACOG adds a few more. Stop and get checked if you have:

• Bleeding from the vagina
• Fluid gushing or leaking from the vagina (ACOG)
• Regular, painful contractions (ACOG)
• Chest pain, or an irregular or racing heartbeat
• Dizziness or feeling faint
• Shortness of breath
• A headache
• Muscle weakness (ACOG)
• Calf pain or swelling

In the later weeks, also keep an eye on your baby's movements. SingHealth's count-to-ten chart says to contact your doctor straight away if your baby makes fewer than 10 movements a day for two days in a row.

Adjusting through the trimesters, and slowing down when you need to

In the first trimester, nausea and tiredness may be the main obstacle. SGH says almost any exercise except contact sports and skiing can be done safely at this stage. Go gently, drink enough and don't feel guilty if some weeks are mostly walks. Our notes on common pregnancy discomforts by trimester cover each stage's aches.

The second trimester is when many women feel most energetic. SGH still advises taking intensity down a notch as the weeks go on, sitting down to lift weights, and avoiding exercises on your back after 16 weeks. In the third trimester, a bigger bump shifts your balance, and SGH notes that many women move from running and cycling to walking, the pool or water aerobics classes. Let how you feel, and your doctor's advice, set the pace.

Getting started safely

Raise exercise at an early antenatal visit so your doctor can flag anything that changes the plan. A high-risk pregnancy, placenta problems, a history of preterm labour, twins, or certain heart or lung conditions all mean activity needs tailoring. SGH says most women can still do simple exercise like brisk walking even with diabetes or high blood pressure, unless they're told to rest completely. If you're still choosing a care provider, our guide on how to choose a gynae in Singapore can help.

If you were inactive before, SGH says it's safe to begin an exercise programme during pregnancy. Add a little each week instead of jumping into hard sessions. Prenatal classes with instructors trained in pregnancy fitness already adapt the moves, and many antenatal courses include movement and labour positions too, which our guide to antenatal classes in Singapore covers.

Returning to exercise after birth

Recovery takes longer after a caesarean than after a vaginal birth. Wait for your doctor's go-ahead, usually at your postnatal check, before structured exercise, and build back up slowly. Gentle walking and pelvic floor exercises come first, and higher-impact exercise much later. If you have tummy separation or leaking, a women's health physiotherapist can guide your return, and our guide to the postpartum pelvic floor explains what to expect.

Frequently asked questions

How much exercise should I aim for during pregnancy?

Singapore's guidelines recommend at least 150 minutes of moderate-intensity activity a week for healthy women with uncomplicated pregnancies. SGH suggests 30 minutes on five to seven days each week. Your doctor can tell you if your own target should be different.

Is swimming safe throughout pregnancy?

Yes, for most women. SGH says it's safe to keep swimming throughout pregnancy, and it often feels best in the third trimester. HealthHub's precautions are to walk slowly on wet floors, step in instead of diving, and keep your breathing steady, and give jacuzzis and hot tubs a miss.

I did not exercise before pregnancy. Can I start now?

In most low-risk pregnancies, yes. SGH says it's safe to begin during pregnancy, and walking is a good way to start. Build up gradually and check with your doctor first.

Can I run while pregnant?

If you ran before pregnancy, usually yes. SGH says runners can keep going with adjustments, though many switch to swimming or walking in the third trimester. Run at a pace where you can still talk, on flat routes, in the cooler hours.

Are squats safe in pregnancy?

Yes, done gently. HealthHub's home routine includes chair squats and wall sits. Use a chair or wall for support, go only as low as is comfortable, and keep breathing steadily.

Is it safe to lift weights while pregnant?

Light strength work is fine for most women, and SGH suggests sitting to lift weights from the second trimester. No Singapore guideline sets a kilogram limit; keep loads light enough to breathe steadily and move with control, and ask your doctor if your job involves heavy lifting.

How do I avoid overheating when exercising in Singapore's weather?

Avoid the midday heat and drink water before, during and after. Choose a pool, a treadmill or a shaded park connector, wear loose clothing and skip hot yoga. If you feel overheated or dizzy, stop and cool down straight away.

What should I do if I notice pain or bleeding during a workout?

Stop immediately. Vaginal bleeding, fluid leaking, painful contractions, dizziness, chest pain, unusual breathlessness and calf pain or swelling are all reasons to call your doctor. For heavy bleeding or strong pain, go to KKH's 24-hour Urgent O&G Centre if you're under 22 weeks, KKH's Delivery Suite from 22 weeks, or the nearest emergency department.

Keeping active is one of the kindest things you can do for yourself and your baby, as long as you stay within safe limits and check in with your doctor. For more pregnancy reads, browse the Fussy Mama blog.