Healthy pregnancy
Pregnancy Exercise Safety Checker
Wondering whether your workout is still OK? Take a 30-second safety screen, then pick any of 36 activities to see whether ACOG counts it safe, modify-with-care, or avoid — and exactly why. Nothing you tap leaves your device.
For most pregnancies the safest plan is more movement, not less — ACOG's target is about 150 minutes of moderate activity a week.
Pregnancy exercise safety checker
Provider clearance first
Check in with your prenatal provider before exercising
You ticked a condition where ACOG says the exercise plan should be individualized by your provider rather than taken from a general list:
Clearance doesn't always mean no movement — for many of these, a provider will still recommend specific activity. But the call belongs to someone who knows your chart. You're welcome to read the full activity list below in the meantime.
Based on ACOG Committee Opinion 804 (physical activity and exercise during pregnancy). This is general information, not medical advice — your prenatal provider tailors any exercise plan to your pregnancy.
Stop exercising and call your prenatal provider if you notice
- Vaginal bleeding
- Fluid leaking from the vagina
- Regular, painful contractions
- Abdominal pain
- Dizziness or feeling faint
- Chest pain
- Headache
- Calf pain or swelling
- Shortness of breath before you start exerting
- Muscle weakness affecting balance
These are ACOG's warning signs to stop — worth a same-day call even if they settle. Ordinary effort-related breathlessness and muscle fatigue, by contrast, are normal.
The full list
Every activity, categorized per ACOG
The same catalog the chooser uses — all 36 activities in three categories, each with the reason and a practical tip or safer swap.
Generally safe (per ACOG)
Safe for most uncomplicated pregnancies, with common-sense adjustments as your body changes.
| Activity | Why it's safe — and how to do it well |
|---|---|
| Walking | Low-impact, easy to dose, and safe in every trimester for nearly everyone — ACOG's first suggestion for staying active. Brisk walking counts toward the 150-minute weekly target: a pace where you can talk but couldn't sing. |
| Low-impact aerobics | Keeps your heart and muscles conditioned without jump impact or jarring. Pick classes labeled low-impact or prenatal, and sit out any jump sequences. |
| Elliptical trainer | Smooth, low-impact cardio with handles to hold as your balance shifts. Rest your hands lightly on the rails and keep the resistance at a talk-test level. |
| Stair climber | Solid low-impact conditioning, and the rails give support as your center of gravity moves forward. Hold the handrails and dial the pace down as your bump grows. |
| Rowing machine | Seated, low-impact, and fall-free. Shorten the stroke as your bump grows and stop the layback well short of reclining flat. |
| Dancing (low-impact) | Great cardio and a mood lift, as long as the choreography stays on the floor. Skip leaps, lifts, and fast spins — a shifting center of gravity makes them fall risks. |
| Swimming | The water carries your weight: no falls, no joint impact, and a low overheating risk. One of the safest choices in all three trimesters. Any comfortable stroke works — laps and pool walking both count toward your weekly 150 minutes. |
| Water aerobics | All the benefits of an aerobics class with the water absorbing the impact and keeping you cool. Prenatal aqua classes exist in many pools — a great pick if land workouts have gotten uncomfortable. |
| Yoga (prenatal / modified) | Builds flexibility, strength, and calm — and prenatal classes build the pregnancy modifications in. After the first trimester, avoid long holds flat on your back and deep closed twists. Heated studios are a separate, firm no. |
| Pilates (modified) | Strengthens the core and posture muscles that pregnancy taxes hardest. Use prenatal modifications, and swap prolonged flat-on-back work for incline or side-lying versions after the first trimester. |
| Strength training (moderate weights) | ACOG counts strength training as safe in pregnancy with sensible modifications — and keeping strength pays off in labor and recovery. Go lighter with more reps, exhale through the effort instead of holding your breath, and move flat-bench work to an incline after the first trimester. |
| Running or jogging (you ran before pregnancy) | Regular pre-pregnancy runners can usually keep running through pregnancy — ACOG counts it safe with your provider's OK. Expect your pace to slow as the weeks pass. Favor cool conditions, even ground, and extra hydration. |
| Stationary cycling & spin classes | All the cardio of cycling with the fall risk removed — a go-to as your balance shifts. Raise the handlebars as your bump grows and keep class intensity at a level where you can still talk. |
| Hiking (low altitude, even trails) | A long walk with a view — fine on maintained, low-altitude trails. Consider trekking poles as your balance shifts, and check the altitude entry before trails above 6,000 ft. |
Modify or use caution
Workable for many people with changes — lighter, cooler, more supported — or a provider conversation first.
| Activity | What the caution is — and how to modify |
|---|---|
| HIIT with jumping / plyometrics | Pregnancy hormones loosen ligaments and your center of gravity keeps moving, so jump-heavy intervals raise sprain and fall risk. Swap jumps for low-impact versions (step-outs instead of jump squats) and hold intensity where you can still talk. |
| Exercising in high heat & humidity | The concern is overheating and dehydration, not the movement itself — ACOG advises staying cool and well hydrated. Train early, indoors, or in water on hot days; drink before, during, and after; stop at the first sign of overheating. |
| Heavy or near-max lifting | Near-maximal lifts push you into breath-holding (Valsalva) and load joints already loosened by pregnancy hormones. Drop the load and add reps, keep breathing through every lift, and get a prenatal form check from a trainer or physical therapist. Pregnancy is for maintaining, not maxing. |
| Floor exercises flat on your back (after the first trimester) | From the second trimester, lying flat lets the uterus compress the large vein returning blood to your heart — which can drop your blood pressure and make you lightheaded. Modify with an incline bench, a wedge, or side-lying versions. Brief transitions through your back are fine; it's the prolonged holds to avoid. |
| Taking up running (new runner) | Pregnancy isn't the moment to start running from scratch — but it's a great moment to start moving. Build toward 150 weekly minutes with brisk walking, swimming, or a stationary bike instead, and add intensity gradually. |
| Road cycling (outdoors) | The pedaling is fine; the fall is the problem — a shifting center of gravity makes spills likelier as pregnancy progresses. Many riders move to a stationary bike in the second or third trimester. If you stay outdoors, keep to flat, quiet, familiar routes. |
| Racquet sports (tennis, pickleball, squash) | Playable for many people through much of pregnancy, but the quick lunges and direction changes get riskier as your balance changes. Ease the pace, don't chase every ball, consider doubles — and rethink as the third trimester approaches. |
| Exercise above 6,000 ft (not acclimatized) | ACOG flags exertion above roughly 6,000 feet for people who don't live at altitude — there's less oxygen for you and the baby. Give yourself days to acclimatize, keep intensity easy, learn the altitude-sickness signs, and clear mountain trips with your provider. Exercise below 6,000 ft is generally fine. |
Avoid during pregnancy
ACOG advises skipping these — each for the specific reason shown.
| Activity | Why to skip it — and a safer swap |
|---|---|
| Water skiing & wakeboarding | Skip it: high-speed falls and forceful water entry are part of the sport. Swimming and water aerobics give you the water without the impact. |
| Surfing | Skip it: wipeouts and board strikes are hard to avoid even for experienced surfers. Swim the same beach instead, and save the board for after delivery. |
| Scuba diving | Skip it: the fetus has no protection against decompression sickness and gas-bubble injury. Snorkeling at the surface and swimming are safe ways to stay in the water. |
| Hot yoga / Bikram (and hot Pilates) | Skip it: the heated room can push your core temperature to levels linked with harm to the baby. The same class at room temperature — ideally a prenatal one — is a safe swap. |
| Gymnastics | Skip it: falls and awkward landings are inherent to the sport. Floor-based strength and flexibility work keeps the athleticism without the falls. |
| Off-road / mountain biking | Skip it: rough terrain makes falls likely even for skilled riders. A stationary bike keeps the training effect without the terrain. |
| Soccer | Skip it: it's a contact sport with real odds of a ball, elbow, or collision hitting your abdomen. Low-impact cardio and strength work keep your fitness ready for the return to the pitch. |
| Basketball | Skip it: contact and mid-air collisions bring both abdominal-impact and fall risk. Solo shooting practice is a gentler way to keep a hand in — game play waits. |
| Ice hockey | Skip it: it combines high-speed body contact with a hard, slippery surface. Off-ice conditioning keeps you game-ready for next season. |
| Boxing & sparring martial arts | Skip it: blows to the torso are the point of the sport. Shadow boxing, footwork, and conditioning drills keep the training without the contact. |
| Downhill (alpine) skiing | Skip it: high-speed falls and collisions are hard to avoid even for strong skiers. Ask your provider about gentler winter options at low altitude — and see the altitude entry before any mountain trip. |
| Snowboarding | Skip it: frequent falls — often onto your torso or tailbone — come with the sport. Save it for next season; walking and gym cardio hold your base fitness in the meantime. |
| Horseback riding | Skip it: an unpredictable animal plus a long way to fall. Groundwork and grooming keep you around the barn without the fall risk. |
| Skydiving | Skip it: ACOG names it outright — opening shock, landing forces, and altitude all put the pregnancy at risk. This one simply waits until after delivery. |
Why it matters
Moving through pregnancy is the default, not the exception
For an uncomplicated pregnancy, exercise is one of the most protective things you can do: ACOG recommends about 150 minutes of moderate-intensity activity a week, and hitting it lowers the risk of gestational diabetes, preeclampsia, and cesarean birth while easing back pain, supporting healthy weight gain, and speeding postpartum recovery.
The three categories here come straight from ACOG Committee Opinion 804. "Safe" activities are low-impact with little fall risk. "Caution" means workable with changes — lighter loads instead of max lifts, no prolonged flat-on-back floor work after the first trimester, care with heat, and easy intensity above 6,000 ft if you're not acclimatized. "Avoid" is reserved for abdominal impact, uncontrolled falls, scuba's pressure changes, and heated studios.
The screen comes first because a handful of conditions — a cerclage, placenta previa after 26 weeks, preeclampsia, severe anemia, ruptured membranes, significant heart or lung disease — mean the plan should be individualized by your provider before any list applies. That's clearance, not a ban on movement.
Next steps
Related tools
Weight-gain calculator
Your healthy gain range by pre-pregnancy BMI — exercise and weight gain go hand in hand.
Pregnancy checklist
Everything to sort out trimester by trimester, movement included.
Prenatal visit schedule
When each visit and test happens — and where to raise your exercise plan.
All pregnancy tools
The full suite — from timing conception to dating a pregnancy.
Sources
Where this comes from
The safe, caution, and avoid categories, the 150-minute weekly target, the warning signs, and the conditions on the screening step all come from ACOG Committee Opinion 804 on physical activity and exercise during pregnancy, with the CDC and HHS activity guidelines echoing the same weekly target. The tool organizes that guidance — your prenatal provider applies it to you.
Medically Reviewed & Fact-Checked · Updated
Reviewed by EasySTD Editorial Team
Compiled and checked by EasySTD's editorial team against CDC and public-health sources. This is educational information, not a substitute for advice from a licensed clinician. Our editorial guidelines →
4 Sources
Data & references
- ACOG Committee Opinion 804: Physical Activity and Exercise During Pregnancy and the Postpartum Periodhttps://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2020/04/physical-activity-and-exercise-during-pregnancy-and-the-postpartum-period
- ACOG patient FAQ: Exercise During Pregnancyhttps://www.acog.org/womens-health/faqs/exercise-during-pregnancy
- CDC: Physical Activity Recommendations for Pregnant and Postpartum Womenhttps://www.cdc.gov/physical-activity-basics/guidelines/healthy-pregnant-or-postpartum-women.html
- HHS: Physical Activity Guidelines for Americans, 2nd editionhttps://health.gov/our-work/nutrition-physical-activity/physical-activity-guidelines/current-guidelines
EasySTD is an information and comparison directory, not a healthcare provider. This tool is general information based on ACOG guidance: it is not medical advice, and it does not create a doctor-patient relationship. Your prenatal provider — who knows your pregnancy — makes the call on your exercise plan.
Good to Know
Exercise in pregnancy: frequently asked questions
How much to aim for, what's safe to keep doing, what to skip entirely, and the signs that mean stop and call.
How much exercise should I get during pregnancy?
ACOG recommends at least 150 minutes of moderate-intensity aerobic activity a week during pregnancy — the same target as for everyone else — ideally spread across most days. Moderate intensity means working hard enough to talk but not sing. Brisk walking, swimming, stationary cycling, and low-impact classes all count. If you were doing vigorous exercise like running before pregnancy, you can usually continue with your provider's OK. If you're starting from little or no activity, that's fine too: begin with a few minutes of walking at a time and build up gradually. In an uncomplicated pregnancy, more movement is the default recommendation — not bed rest.
Can exercise cause a miscarriage or harm the baby?
For a healthy, uncomplicated pregnancy, no — this is one of the better-studied questions in obstetrics, and ACOG is clear that moderate exercise does not increase the risk of miscarriage, low birth weight, or early delivery. It actually lowers the risk of gestational diabetes, preeclampsia, and cesarean birth, eases back pain and constipation, supports healthy weight gain, and speeds postpartum recovery. The real risks come from specifics: activities with abdominal-impact or fall potential, scuba diving's pressure changes, overheating in hot environments, and a short list of medical conditions where exercise needs a provider's plan. That's exactly what this tool screens for.
Can I keep running or lifting weights now that I'm pregnant?
Usually, yes. If you ran regularly before pregnancy, ACOG considers continuing to run safe in an uncomplicated pregnancy — expect pace and distance to drop as the weeks pass, and prioritize hydration, cool conditions, and even ground. Strength training is also safe with modifications: moderate loads with more repetitions, exhaling through each effort rather than breath-holding, and moving flat-on-back bench work to an incline after the first trimester. What changes is the extremes — near-maximal lifting and jump-heavy intervals deserve caution, because pregnancy hormones loosen ligaments and your center of gravity shifts. Pregnancy is a time to maintain fitness, not chase personal records.
Which exercises should I avoid completely while pregnant?
ACOG's avoid list is short and specific. Contact sports — soccer, basketball, ice hockey, boxing — risk a blow to your abdomen. High fall-risk activities — downhill skiing, snowboarding, water skiing, surfing, off-road cycling, gymnastics, and horseback riding — risk hard impacts you can't control. Scuba diving is out because the fetus has no protection against decompression sickness. Skydiving is named outright. And hot yoga or hot Pilates are out because a heated studio can raise your core temperature to levels linked with harm. Almost everything else — and it's a long list — is safe as-is or workable with modifications.
When should I stop exercising and call my provider?
Stop right away and call your prenatal provider if you notice any of ACOG's warning signs: vaginal bleeding, fluid leaking from the vagina, regular painful contractions, dizziness or feeling faint, chest pain, headache, calf pain or swelling, shortness of breath before you've even started exerting, or muscle weakness that affects your balance. These aren't push-through-it symptoms — some can signal preterm labor, a blood-pressure problem, or a clot, and they deserve a same-day call even if they settle. Ordinary breathlessness during effort, mild warmth, and muscle fatigue, by contrast, are normal parts of exercising while pregnant.
Is what I enter here private?
Yes. This tool runs entirely in your browser. The conditions you tick and the activities you check are evaluated on your own device and are never sent to a server, saved, or shared — close the tab and they're gone. We treat reproductive health data as sensitive by default. The guidance is general information drawn from ACOG's recommendations on physical activity in pregnancy; it isn't medical advice, and your prenatal provider — who knows your history — is the right person to tailor an exercise plan to you.
Have a different question? Browse the full pregnancy FAQ library, every question we answer, in one place.