Why Newborns Cry (And Why It's Not Your Fault)
A crying newborn is not a commentary on your parenting. It is a communication — the only one your baby currently has. And there is a remarkably effective evidence-based framework for responding to it.
Dr. Harvey Karp's 5 S's, introduced in The Happiest Baby on the Block, are rooted in the concept of the "fourth trimester" — the idea that human babies are born three months too early due to our large brain-to-pelvis ratio, and that the first three months of life are essentially an extension of the womb experience.
The 5 S's: Step by Step
1. Swaddle
Wrapping your baby snugly recreates the secure, contained feeling of the womb and prevents the startle (Moro) reflex from waking them during light sleep. The key is firmness — a loose swaddle often makes things worse. Arms down, chest slightly firm, legs free to move.
2. Side or Stomach Position
Holding a crying baby on their side or stomach (face-up when held against your body) activates a calming reflex. Important: this is for settling while awake only — always place your baby on their back to sleep.
3. Shush
A firm, continuous shushing sound — louder than you'd expect — mimics the constant whooshing sounds of blood flow your baby heard in the womb for 40 weeks. White noise machines, apps, or simply shushing loudly next to their ear can be transformative.
4. Swing
Rhythmic, continuous movement calms the vestibular system. For newborns, the movement needs to be fast and jiggly — gentle rocking is often not enough. Think of the constant motion of walking or a car ride. As babies get older, gentler swinging becomes effective.
5. Suck
Sucking triggers the calming reflex powerfully. Breastfeeding, bottle feeding, or a clean finger or pacifier can all provide this. The act of sucking activates the parasympathetic nervous system — the "rest and digest" mode.
Tips for Using the 5 S's
Start with swaddling and work through the S's in order. Often, the first two or three will be enough. If you're in the thick of the fourth trimester and nothing is working, layering all five simultaneously (swaddled, on side, shushing loudly, swinging, offering something to suck) can feel dramatic — but it works.
Beyond the Technique: The Emotional Side
Techniques help. But the emotional experience of persistent crying — the helplessness, the anxiety, the exhaustion — needs support too. That's what The Midnight Parent addresses directly.