The Moro reflex

Baby truly has many tricks up their sleeve — including a whole host of reflexes that can surprise new parents. Among them, the Moro reflex.

What is it? Is it normal? We tell you everything in this article!

The Moro reflex: what is it?

The Moro reflex is what is known as an "archaic" or primary reflex, which occurs between 0 and 5 months of age. It is a sudden action that takes place without the brain having issued any instruction whatsoever.

It is, in fact, an automatic, involuntary gesture — but above all, completely normal, so there is absolutely nothing to worry about!

You will see baby suddenly startle, flinging their arms, fingers, and legs outward. This is often followed by crying.

This can happen when baby is asleep, but also when a sudden noise or movement occurs nearby.

It is worth knowing that this gesture is entirely normal and is even a sign of good brain health in baby. Should it persist beyond this age, the paediatrician may consider further examinations.

How to reduce the Moro reflex during sleep?

Although this startle is perfectly natural and harmless, it can be a nuisance — especially when your little one is in a deep sleep and it wakes them up. And of course, wakes you up in the process!

To prevent this, you can swaddle your baby when they fall asleep, so that they avoid this sudden startle. This technique has another advantage too: it helps to reassure baby by wrapping them snugly — almost like a reminder of being in the womb.

Baby's other reflexes

If you look a little further, you will discover plenty more! For example, the automatic walking reflex. During baby's first few days of life, the medical team will actually test this briefly by standing baby upright.

There is also the swimming reflex, the sucking reflex, and the crawling reflex. In short, these are genuine primary instincts that will gradually develop into voluntary movements.