One of the most common concerns I hear from parents considering sleep training is this: “If we sleep train, will my baby still be able to nap in the car or pram?” It’s a great question—because while naps on the go can feel like a lifesaver during a busy day, motion naps may be a sleep saboteur you hadn’t even considered.
The short answer to the question above? Yes—your baby can still nap in the car or pram after sleep training. But should those be the norm? Not if you’re aiming for truly restorative sleep.
Naps in a cot—calm, dark, and stationary—are considered the gold standard for day sleep, especially in the first two years of life. These naps support brain development, emotional regulation, and overall well-being far more effectively than naps taken on the move. That’s why sleep experts recommend limiting “junk sleep”—light, interrupted naps in motion—and prioritising quality sleep at home whenever possible.
As a certified sleep consultant at Cherished Sleep, I help families understand the real impact of motion naps versus stationary sleep, and how to strike the right balance using the proven 80/20 rule. Let’s break it down with the science and practicability.
Cot Naps vs. Motion Naps: Why They’re Not the Same
Napping in the car, stroller, carrier, or sling can seem like a parenting win—especially if you’ve been pushing a pram around the block just to get a nap in. And while motion naps do serve a purpose, you need to remember that they aren’t as restorative or beneficial as naps in a cot.
Why not?
- Studies have shown that the movement and noise of on-the-go environments prevent the brain from cycling into the deeper stages of non-REM (aka DEEP) sleep. Research published in the journal Sleep Medicine found that motion during sleep can interrupt the body’s ability to regulate heart rate and breathing and may keep infants in a lighter sleep state.
- Babies napping in car seats or prams are more likely to wake early, and over time, they can become dependent on movement to fall asleep.
- Long-term reliance on motion sleep can lead to chronic overtiredness, shorter nap cycles, and difficulty self-settling—especially in babies under 6 months.
- Cot naps, on the other hand, provide what we call “nutritious sleep”—just like a proper meal gives more lasting fuel than a quick snack. They’re calm, dark, stationary, and consistent, giving your baby’s brain the ideal conditions for restoration, learning, and development.
What Is the 80/20 Rule—and Why It Works
At Cherished Sleep, I believe in practical, real-life solutions for families—and the 80/20 rule is one of them.
The 80/20 rule aims for 80% of your baby’s naps to happen in their cot, in a calm, dark, and quiet sleep space. The remaining 20% can be more flexible—life happens, after all.
This approach allows your baby to get the benefits of routine, rhythm, and deeper sleep, while still giving you breathing room to live your life.
Examples of that 20%?
- Driving to swimming lessons for an older sibling
- Meeting a friend for coffee
- Grocery shopping during nap time
- Visiting whānau or attending an appointment
- Catching up on errands in the only quiet moment you have
You’re not doing anything “wrong” when naps happen on the go—but over time, if all naps are motion-based, your baby may struggle to fall asleep in their cot or become reliant on rocking, pram-pushing, or driving to settle.
Why Parents Rely on Motion Naps—and What to Watch For
In today’s world, we know that parents are juggling more than ever—multiple kids, full or part-time work, household logistics, and that huge mental load. It’s no surprise that many naps happen on the go. And sometimes, it’s the only way a nap happens at all.
Maybe you can relate to some of the common reasons parents end up with motion naps:
- Nap time coincides with the school pick-up run
- Baby falls asleep in the car before you get home
- You’re out at the mall, the park, or visiting friends
- Baby only naps when you’re walking or babywearing
These naps still count for something—like junk food, they’ll take the edge off. But they’re just not as “nutritious” as cot sleeps. Just like we don’t build a healthy diet on fast food, we don’t want to build a sleep routine on motion naps.
What Does the Research Say?
Recent studies have reinforced what we see in practice and note that:
- Motion disrupts the brain’s ability to enter deep, consolidated sleep, especially under 6 months of age, when sleep architecture is still developing.
- Babies who consistently nap on the go may exhibit more frequent wake-ups and shorter sleep cycles.
- Long-term sleep quality improves when naps are stationary, dark, and undisturbed—in other words, in the cot.
Even the American Academy of Pediatrics cautions that car seats and prams should not be used as routine sleep environments, especially for younger infants.
Over 6 Months: When Cot Naps Really Start to Shine
For babies under 6 months, we often follow awake windows and work with flexibility. But once your baby is over 6 months, their internal sleep rhythms become more predictable, and that’s when timed cot naps can support much deeper, more consistent daytime sleep.
Sleep training after 6 months gives your child the tools to nap independently in their cot—without needing motion or assistance to fall asleep. And that’s a skill that carries over into better overnight sleep as well.
What Makes a High-Quality Nap?
Whether you’re just starting sleep training or refining your nap schedule, here’s what to focus on for infants over 6 months:
✔️ Nap in a cot—stationary, flat, dark, and quiet
✔️ Finish by 4:00 PM to protect bedtime
✔️ Follow your baby’s age-appropriate wake windows or set nap times
✔️ Watch for sleepy cues, but don’t delay too long
✔️ Keep motion naps as the exception, not the rule
Sleep Training Isn’t All or Nothing
At Cherished Sleep, I always remind parents: Sleep training isn’t about perfection—it’s about consistency.
When most naps are happening in the cot, the occasional nap in the car or pram isn’t going to undo your hard work. Your baby’s sleep skills are strong enough to handle real life—and that’s the goal.
So go ahead—plan that coffee catch-up, attend kindy drop-off, or walk the dog. Just anchor your baby’s sleep in a strong nap routine built around healthy cot habits first.
Want Help With Naps That Actually Work?
If your baby only naps with motion—or if your days feel dictated by unpredictable sleep patterns—I can help.
I work with families across New Zealand and beyond, to establish calm, consistent nap routines that support growth, development, and family sanity.
Ready to reclaim your day?
Explore sleep support options at cherishedsleep.co.nz or get in touch for a personalised sleep plan tailored to your baby and your life. Book a free initial all to learn how I can help. And follow along on Facebook or Instagram for more sleep tips and parenting know how.
📚 References
- Bell, S. M., & Horowitz, F. D. (1986). Motion suppresses quiet sleep in the neonate. Developmental Psychobiology, 19(4), 369–379. https://doi.org/10.1002/dev.420190409
→ Found that movement, such as rocking or being in a car, suppresses deep (quiet) sleep in newborns. - Mosko, S., Richard, C., & McKenna, J. (1994). Infant sleep architecture during bedsharing and possible implications for SIDS. Pediatrics, 94(5), 841–849.
→ Demonstrated that sleep environment (including motion and proximity) affects how deeply and how long infants sleep. - American Academy of Pediatrics, Task Force on Sudden Infant Death Syndrome. (2016). SIDS and Other Sleep-Related Infant Deaths: Updated 2016 Recommendations for a Safe Infant Sleeping Environment. Pediatrics, 138(5), e20162938. https://doi.org/10.1542/peds.2016-2938
→ Recommends against routine sleep in car seats, swings, or bouncers due to sleep quality and safety concerns, especially under 6 months. - Anders, T. F. (1978). Home-recorded sleep in 2- and 9-month-old infants. Journal of the American Academy of Child Psychiatry, 17(3), 421–432. https://doi.org/10.1016/S0002-7138(09)62285-7
→ Showed that external motion and stimulation contribute to lighter and less consolidated infant sleep.