Food & lifestyle

Is exercise dangerous during pregnancy?

Checked against the sources listed on this page. Not reviewed by a clinician. Last updated 5 November 2026. How we check.

Myth

No. For uncomplicated pregnancies, about 150 minutes a week of moderate activity is recommended.

Regular exercise lowers the risk of gestational diabetes, pre-eclampsia and excessive weight gain, and helps with mood, sleep and back pain.

Avoid contact sports, activities with a high fall risk, scuba diving and lying flat on your back for long periods later in pregnancy. Stop and seek advice if you have bleeding, dizziness, chest pain or fluid leakage.

References

  1. NHS: Exercise in pregnancy
  2. ACOG Committee Opinion 804: Physical activity and exercise during pregnancy (correction notice). Obstetrics & Gynecology, 2021

More food & lifestyle myths

Myth

Do you need to eat for two when pregnant?

No. The NHS says there’s no need to “eat for 2”. US guidance suggests no extra calories in the first trimester, about 340 extra a day in the second, and about 450 in the third.

 Myth

Do you have to give up coffee completely during pregnancy?

Not necessarily. Most guidelines say up to 200 mg of caffeine a day, about one or two cups of coffee, is acceptable.

 Myth

Should you avoid fish when pregnant?

No. 2–3 servings a week of low-mercury fish are recommended. Just avoid the high-mercury ones.