Exercises for Pregnancy: Safe Workouts for Each Trimester

You're pregnant, and you want to stay active. But conflicting advice makes it confusing—some say exercise is fine, others make pregnancy sound like a fragile condition requiring bed rest.

Here's the truth: for most healthy pregnancies, exercise is not only safe—it's beneficial. Regular physical activity reduces complications, prepares your body for labor, and helps recovery afterward.

Let's clarify what's safe, what to modify, and how to stay active through all three trimesters.

Why Exercise During Pregnancy?

Benefits for You

• Reduces risk of gestational diabetes
• Lowers risk of preeclampsia
• Reduces back pain
• Decreases constipation and bloating
• Improves mood and energy
• Promotes healthy weight gain
• Prepares body for labor
• Faster postpartum recovery

Benefits for Baby

• Healthier birth weight
• Lower risk of macrosomia (very large baby)
• Better stress tolerance
• Possible cognitive benefits

The Research

Organizations including ACOG (American College of Obstetricians and Gynecologists) recommend that pregnant women get at least 150 minutes of moderate-intensity aerobic activity per week.

When to Get Medical Clearance

Talk to your healthcare provider before exercising if you have:

• Heart or lung disease
• Cervical insufficiency or cerclage
• Placenta previa after 26 weeks
• Persistent bleeding
• Preterm labor risk
• Ruptured membranes
• Preeclampsia or pregnancy-induced hypertension
• Severe anemia

Most healthy pregnant women can exercise safely, but confirm with your provider.

General Exercise Guidelines

Safe Intensity

The talk test: You should be able to carry on a conversation while exercising. If you're too breathless to talk, slow down.

Heart rate: Old guidelines suggested strict heart rate limits, but current recommendations focus on perceived exertion instead. Moderate intensity that feels somewhat hard is appropriate.

Hydration

• Drink water before, during, and after exercise
• Pregnancy increases fluid needs
• Dehydration can trigger contractions

Temperature

• Avoid overheating, especially in first trimester
• Skip hot yoga, saunas, and exercising in extreme heat
• Wear breathable clothing
• Exercise in climate-controlled environments when possible

Nutrition

• Don't exercise on an empty stomach
• Have a snack 1-2 hours before activity
• Pregnancy isn't the time for calorie restriction
• Eat additional calories to support activity

Exercises That Are Generally Safe

Cardiovascular

• Walking: Excellent throughout pregnancy
• Swimming: Supports body weight, keeps you cool
• Stationary cycling: No balance risk, adjustable intensity
• Low-impact aerobics: Prenatal classes ideal
• Elliptical: Low impact, good cardio

Strength Training

• Bodyweight exercises: Modified as needed
• Resistance bands: Versatile and safe
• Light to moderate weights: Focus on control
• Functional movements: Squats, hinges, presses

Flexibility and Mind-Body

• Prenatal yoga: Modified for pregnancy
• Stretching: Gentle, don't overstretch
• Pilates: Modified, with qualified instructor

Exercises to Avoid or Modify

Avoid Completely

• Contact sports: Soccer, basketball, hockey
• High fall risk: Skiing, gymnastics, horseback riding
• Scuba diving: Decompression risks to baby
• Exercising at high altitude (unless already acclimated)
• Hot yoga or hot Pilates
• Activities with rapid direction changes (risk of joint injury)

Modify or Stop

• Lying flat on back (after 1st trimester): Can compress blood vessels
• Exercises that cause coning/doming of abs: Stop if you see bulging
• High-impact jumping: Reduce or eliminate as pregnancy progresses
• Heavy lifting: Reduce loads, focus on control
• Deep twisting: Modify to open twists

First Trimester (Weeks 1-12)

What's Happening

• Fatigue and nausea are common
• Baby is developing rapidly
• Your body is adjusting hormonally
• Not much visible change yet

Exercise Approach

If you exercised before pregnancy, you can generally continue your routine with some modifications.

If you're new to exercise: Start gently—walking, swimming, prenatal yoga.

First Trimester Workout Example

3-4 times per week:

Warm-up (5 min):

• Walking or marching in place

Cardiovascular (15-20 min):

• Walking, swimming, or stationary bike
• Moderate intensity (can still talk)

Strength (15 min):

• Squats: 12 reps
• Wall push-ups: 12 reps
• Seated rows (band): 12 reps
• Glute bridges: 12 reps
• Plank: 20-30 seconds (if comfortable)

Stretching (5 min):

• Hip stretches
• Chest opener
• Calf stretch

First Trimester Tips

• Listen to your body—fatigue is real
• Stay hydrated
• Exercise can help with nausea for some women
• Don't start aggressive new activities
• Temperature regulation is important

Second Trimester (Weeks 13-26)

What's Happening

• Energy often returns ("honeymoon trimester")
• Belly is growing
• Center of gravity is shifting
• Relaxin hormone is loosening joints

Exercise Modifications

Avoid lying flat on back for extended periods—use incline or side-lying positions

Balance may be affected—use support when needed

Don't overstretch—relaxin makes joints more flexible, increasing injury risk

Second Trimester Workout Example

3-4 times per week:

Warm-up (5 min):

• Walking, gentle movement

Cardiovascular (20-30 min):

• Swimming (excellent as belly grows)
• Walking
• Prenatal aerobics class

Strength (15-20 min):

• Squats: 12 reps (can use wall for support)
• Incline push-ups: 12 reps
• Seated rows: 12 reps
• Side-lying leg lifts: 10 each side
• Glute bridges: 12 reps
• Bird dogs: 10 each side (for back support)

Stretching and pelvic floor (10 min):

• Cat-cow: 10 cycles
• Hip stretches (figure four, hip flexor)
• Kegel exercises: 10-15 reps

Second Trimester Tips

• Wear supportive shoes
• Consider a belly support band for exercise
• Stay hydrated—needs increase as blood volume increases
• Avoid exercises that cause discomfort
• Modify intensity based on how you feel

Third Trimester (Weeks 27-40)

What's Happening

• Belly is large, affecting balance and comfort
• Fatigue may return
• Joints are looser
• Preparing for labor

Exercise Modifications

Reduce intensity as needed Focus on maintaining fitness, not building it Prioritize comfort—skip anything that doesn't feel right Emphasize pelvic floor and labor prep

Third Trimester Workout Example

3-4 times per week (or daily shorter sessions):

Warm-up (5 min):

• Gentle walking, mobility work

Cardiovascular (15-20 min):

• Swimming (wonderful late in pregnancy)
• Walking
• Stationary bike (recumbent may be more comfortable)

Strength (10-15 min):

• Wall squats: 10 reps
• Seated band exercises
• Side-lying leg work
• Standing calf raises
• Wall push-ups

Labor prep and stretching (10-15 min):

• Deep squat holds (supported): 30-60 seconds
• Cat-cow: 10 cycles
• Hip circles on hands and knees
• Pelvic tilts
• Kegels: 15 reps
• Perineal stretching (if recommended by provider)

Third Trimester Tips

• Walking is always appropriate
• Swimming feels amazing—water supports your weight
• Don't push through discomfort
• Some days will be harder—adjust accordingly
• Keep moving but don't exhaust yourself

Pelvic Floor Exercises

The pelvic floor supports your uterus, bladder, and bowel. Strengthening it helps during pregnancy and recovery.

Kegels

How to do them:

1. Identify the muscles (stop urination mid-stream—these are the muscles, but don't do Kegels this way regularly)
2. Contract and hold for 5-10 seconds
3. Release fully
4. Repeat 10-15 times
5. Do 3 sets daily

Pelvic Floor Relaxation

Learning to relax the pelvic floor is also important for labor:

• Practice releasing the pelvic floor fully after Kegel contractions
• Deep breathing helps
• Prenatal yoga often includes this

Warning Signs: When to Stop

Stop exercising and contact your healthcare provider if you experience:

• Vaginal bleeding
• Fluid leaking from vagina
• Chest pain
• Headache
• Dizziness or feeling faint
• Calf pain or swelling
• Regular, painful contractions
• Decreased fetal movement
• Shortness of breath before exercise

Modifying Specific Exercises

Planks

• First trimester: Regular plank likely fine
• Second/third trimester: Incline plank (hands elevated) or on knees
• Stop if you see doming/coning of abs

Squats

• Safe throughout pregnancy
• Use wider stance as belly grows
• Hold support if balance is affected
• Deep squats help prepare for labor

Push-Ups

• Incline push-ups (hands on bench/wall) as pregnancy progresses
• Maintain good form—don't let back sag

Core Work

• Avoid traditional crunches and sit-ups (pressure on abs)
• Focus on core stability: bird dogs, pelvic tilts, diaphragmatic breathing
• Stop any exercise that causes doming of the belly

Running

• If you ran before pregnancy, you can often continue
• Reduce intensity and distance as needed
• Stop if it becomes uncomfortable
• Support belly with supportive wear if helpful

Postpartum Return to Exercise

After delivery:

• Wait for provider clearance (usually 6 weeks, longer for C-section)
• Start with walking and pelvic floor exercises
• Progress gradually
• Address any diastasis recti before intense core work
• Be patient—recovery takes time

The Bottom Line

Exercise during pregnancy is safe and beneficial for most women. The key is listening to your body and adapting as pregnancy progresses.

The essentials:

1. Get clearance from your healthcare provider
2. Stay at moderate intensity (you can talk while exercising)
3. Stay hydrated and avoid overheating
4. Modify as pregnancy progresses
5. Stop if something doesn't feel right
6. Focus on maintaining fitness, not peak performance

You're growing a human—that's already an athletic feat. Exercise supports you through this amazing process.

Move your body, trust your instincts, and enjoy this active pregnancy.