Working out with weights while pregnant may lower the chance of having a baby that's much heavier than normal.

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Pro

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Evidence from Studies

Supporting (1)

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Community contributions welcome

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Resistance training in pregnancy: systematic review and meta-analysis of pregnancy, delivery, fetal and pelvic floor outcomes and call to action

Systematic Review With Meta-Analysis

Human

2025 Jul 31

This study found that pregnant women who did strength training were less likely to have babies that were unusually large. So, lifting weights or doing resistance exercises during pregnancy may help keep the baby at a healthy weight.

Contradicting (0)

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Similar Assertions

When pregnant women do resistance training as part of their exercise routine, their babies are less likely to be born very large, which can help avoid birth problems.

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0

86%

Working out with weights while pregnant doesn't harm the mom or the baby — it's safe.

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0

85%

Working out with weights or resistance exercises while pregnant may help lower the chances of developing high blood pressure, diabetes during pregnancy, mood problems, and needing a C-section.

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81%

When pregnant women do strength training, it's usually part of a mix of exercises, but most studies don't clearly say how hard, how often, or how much weight to use — so we can't figure out the best way to make moms healthier.

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80%

Some pregnant women did strength training during the middle and later parts of their pregnancy, and nothing bad happened — so it might be safe, but we don't know for sure yet.

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79%