Is It Normal for Newborns to Breathe Fast Then Slow?
Yes — it is completely normal. Newborns breathe in a repeating cycle of fast breaths followed by slower breaths, with brief pauses of up to 10 seconds in between. This is called periodic breathing. It happens because the brain's breathing control center is still maturing. As long as the baby stays pink and restarts breathing on their own, this fast-then-slow pattern is a normal part of newborn development.
Why Newborns Breathe This Way
- A newborn's brain sends breathing signals in bursts, not in a smooth rhythm — this creates the fast-then-slow pattern parents notice, especially during sleep.
- Newborns spend over half their sleep time in active sleep, which naturally makes breathing speed up, slow down, and pause more than during quiet sleep.
- The body's oxygen and carbon dioxide sensors are still calibrating after birth — they sometimes overshoot, triggering a burst of fast breaths, then undershoot, causing a brief slowdown or pause before correcting.
- This pattern — called periodic breathing — is seen in up to 40% of healthy full-term newborns in the first weeks of life and gradually fades as the brain matures, typically becoming uncommon by about 6 months of age.
- The fast-then-slow cycle is most noticeable between midnight and early morning, when babies spend the longest stretches in active sleep.
When to Worry
- A pause lasting 20 seconds or longer — this crosses the line from normal periodic breathing into apnea and needs immediate attention.
- Any color change during a pause — blue or gray lips, tongue, or face means the baby is not getting enough oxygen, even if the pause is short.
- The baby goes limp or floppy during or right after a breathing pause, or needs to be touched, rubbed, or stimulated to start breathing again.
- The pattern is getting worse, not better — periodic breathing that is increasing in frequency or duration over the first few weeks, rather than gradually decreasing, should be discussed with the pediatrician.
See the Visual Guide
Baby Stops Breathing for a Few Seconds (Periodic Breathing & Apnea)See what breathing pauses look like, what causes them, and when to seek care.View visual guide →Newborn Periodic Breathing: Why Babies Pause Their BreathDeep dive into the neurology behind periodic breathing in newborns.View visual guide →
