# Pregnancy Exercise: ACOG Guidance, Benefits, and Absolute Contraindications > ACOG CO 804: activity has minimal risks and benefits most women. Target ≥150 min/week moderate aerobic when uncomplicated; screen absolute contraindications. *Published 2026-07-10 · Updated 2026-07-10 · By Julian Hart* In short ACOG: **move unless contraindicated**. ≥**150 min/week moderate** aerobic + RT if uncomplicated. Screen absolute risks; modify contact, heat, and supine stress. Bed rest culture is outdated for most pregnancies. The modern default is activity with medical gates—not hero workouts that ignore obstetric reality. *This article is informational and editorial only. It is not medical advice, diagnosis, or a treatment plan. Numbers and literature ranges cited here are not personal prescriptions. Consult a qualified clinician before changing medications, supplements, diet, equipment, or management of a diagnosed condition. Seek urgent care for emergencies.* ## What did CO 804 change in tone? Replaces older more restrictive messaging (CO 650 lineage) with encouragement for activity in uncomplicated pregnancy. Benefits most women; minimal risks when appropriately screened. Patient FAQs reinforce the 150-minute moderate aerobic message. ## How should previously active vs inactive people start? Previously active women can often continue with trimester modifications. Previously inactive should start gradually with short bouts. Occupational lifting has provisional guidance—use clinical sources, not gym lore. Key reference points ItemNormSource class Aerobic dose≥150 min/wk moderateACOG FAQ / CO 804 StrengthOK if uncomplicatedACOG-linked Absolute CIScreen listCurrent clinical table Intensity toolTalk test / RPEPractical Stop rulesBleeding, dizziness, etc.Seek care ## What relative contraindications need judgment? Examples: anemia, unevaluated arrhythmia, poorly controlled diabetes/HTN/thyroid/seizure, extreme BMI ends, orthopedic limits, heavy smoking, extreme sedentary history. These are not automatic bans—they are clinician-guided modifications. Trimester balance and center-of-mass changes may favor machines and wider stances. ## What does responsible fitness content never do? Prescribe bed rest without indication. Peak powerlifting meets without obstetric culture of clearance. Push hot yoga exhaustion challenges or dehydration contests. Sources: [ACOG CO 804](https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2020/04/physical-activity-and-exercise-during-pregnancy-and-the-postpartum-period); [CO 804 PubMed record](https://pubmed.ncbi.nlm.nih.gov/32217980/); [ACOG FAQ exercise during pregnancy](https://www.acog.org/womens-health/faqs/exercise-during-pregnancy). Readers should dual-source primary literature, translate slogans into exposure units and effect sizes, and rank interventions by expected value under uncertainty. Cheap reversible steps often outrank extreme protocols. Opportunity cost is real: hours spent on unvalidated tests are hours not spent on sleep, training, protein adequacy, and primary care. Sex, life stage, comorbidities, medications, and geography change interpretation. Prefer falsifiable claims with named endpoints over multi-disease cure lists. Update beliefs when stronger trials appear rather than freezing identity around a single paper or influencer narrative. Measured curiosity beats both panic and complacency. Further reading should prioritize primary sources and consensus documents over secondary social summaries. When evidence is mixed, state both the signal and the limits in the same paragraph. When evidence is strong, still avoid overclaiming universality across populations. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. Context, dose, endpoint, and population must travel together; slogans that drop any of those four are not finished claims. ## Sources 1. [ACOG CO 804](https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2020/04/physical-activity-and-exercise-during-pregnancy-and-the-postpartum-period) 2. [CO 804 PubMed record](https://pubmed.ncbi.nlm.nih.gov/32217980/) 3. [ACOG FAQ exercise during pregnancy](https://www.acog.org/womens-health/faqs/exercise-during-pregnancy) --- Source: https://healthcanon.com/womens-health/pregnancy-exercise-acog Index: https://healthcanon.com/llms.txt · Full text: https://healthcanon.com/llms-full.txt