Your baby likely cries when you put them down after falling asleep in your arms for a few key reasons, including comfort, security, and the startle reflex.
Here's a breakdown:
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Comfort and Security: Your baby finds comfort and security in your arms. The warmth, gentle movement, and familiar scent of the parent are soothing. When put down, they experience a change in environment and a loss of that comforting presence.
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Startle Reflex (Moro Reflex): Newborns possess a natural startle reflex, also known as the Moro reflex. This reflex causes them to suddenly fling out their arms and legs and throw their heads back. This involuntary movement can jolt them awake and frighten them, leading to crying, as explained by this reference Newborns experience a startle reflex (also known as the Moro reflex) that causes them to fling out their arms and legs and throw their heads back. This reflex is strongest in the first few months.
Here's a table summarizing the reasons:
| Reason | Description |
|---|---|
| Comfort/Security | Baby feels safe and secure in parent's arms due to warmth, scent, and movement. |
| Change in Environment | Transfer to a crib or other surface represents a change and loss of comforting presence. |
| Startle Reflex | Involuntary movements can wake and frighten the baby. |
What Can You Do?
Here are some strategies to try:
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Swaddling: Swaddling can help to minimize the impact of the startle reflex. By wrapping your baby snugly, you restrict their movements and prevent them from startling themselves awake.
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Warm the Crib: A cold crib can be jarring. Warm the crib with a heating pad (remove it before placing the baby in) or a warm blanket.
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Gradual Transition: Try to put your baby down before they are in a very deep sleep. This allows them to adjust to the new surface more easily.
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Maintain Contact: After placing your baby in the crib, keep your hand on their chest for a few minutes to provide reassurance.
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White Noise: White noise can help to mimic the sounds of the womb and block out other distracting noises.
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Consider a Slanted Sleeper: If appropriate, consider a safe slanted sleeper to help avoid the startle reflex from waking your child.
