Your baby starts yawning at around 11 weeks, although without any actual sleep state, as the brain cells that cause "sleep" have not yet formed.
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Baby fun fact
Author:
EM
Enf.ª Margarida LançaSpecialist Nurse in Maternal and Obstetric Health
Last updated 22 August 2026
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Pregnancy care and follow-up
- EMEnf.ª Margarida LançaSpecialist Nurse in Maternal and Obstetric HealthBook