Why do babies cry: A late-night letter to my exhausted self

It's 3:14 AM and you're standing barefoot on the cold hardwood floor of our Chicago apartment. The radiator is hissing that metallic, rhythmic sound it only makes when the temperature outside drops below zero. Your three-week-old is screaming a jagged, high-pitched noise that's currently short-circuiting your brain. You have a pediatric nursing degree framed on the wall in the hallway, and right now, it feels about as useful as a paper umbrella in a monsoon.

I know you're currently typing variations of how to soothe a crying babi into your phone with your thumb while vibrating like a cheap massage chair trying to bounce him to sleep. I know you just searched for why my babie hates me on a sleep-deprivation forum. Put the phone down. I'm writing this to you from six months in the future. The fog lifts, the screaming dials down, and you eventually learn how to decode the noise.

Biology of a meltdown

I used to wonder why infants wail so aggressively the second they hit room air. People always ask why do babies cry when born, as if the answer isn't completely obvious. You just spent nine months floating in a dark, warm, temperature-controlled fluid, constantly fed, never hungry, wrapped in a tight hug. Then suddenly you're shoved through a narrow tunnel into a freezing bright room where a stranger in a mask rubs you aggressively with a rough towel. I'd scream too.

My pediatrician said the newborn cry is literally engineered by evolution to make us panic. It's not just you overreacting. When he screams, your amygdala lights up and dumps a bucket of cortisol into your bloodstream. Your heart rate spikes. If you're nursing, your chest might literally start leaking milk because your body releases oxytocin and prolactin in response to the acoustic frequency of the sound. It's a biological hostage situation.

You can't ignore it because your DNA won't let you. That whole idea about letting them cry it out to build character or expand their lungs is garbage. My pediatrician mumbled something about how leaving them to scream just lowers their blood oxygen and keeps their tiny nervous systems stuck in fight-or-flight mode. I guess their brains just don't know how to turn off the alarm without an adult coming over to press the reset button.

My personal triage system

Listen, before you spiral into a dark hole of anxiety and start Googling rare metabolic disorders, just run the basic triage checklist. I've seen a thousand of these meltdowns in the pediatric ward. Instead of obsessively checking the diaper then rocking aggressively then shoving a pacifier in his mouth and wondering if your breastmilk is the problem, just strip him down completely to check his tiny toes for hair tourniquets while holding his bare chest against your skin.

Most of the time, the fix is embarrassingly simple. They're hungry. They have a wet diaper. They're too hot because we always overdress them out of some deep-seated fear they'll freeze to death indoors. Check the back of their neck. If it's sweaty, peel a layer off.

But then there's the witching hour. Let me just vent about the witching hour for a minute. Every evening around 6 PM, right when the sun goes down and you're craving a single moment of silence, he will start to fuss. It starts as a whimper and escalates into a full-blown, back-arching howl. My mother calls me every day telling me to drink fennel tea, saying it's gas, saying I need to massage his stomach with warm oil. I nod and say yes beta, sure yaar, but it's not gas. It's the culmination of being alive for twelve hours. Their neurological systems are completely immature. They spend the whole day absorbing lights, shadows, the smell of the dog, the sound of the television, and by evening, their brain just crashes. It's pure sensory overload. You can't fix it with drops, you just have to hold them in a dark room and wait for the system to reboot.

Also, nobody is teething at four weeks, so ignore the neighborhood moms telling you to rub gel on his gums.

Fabric matters more than you think

I used to think baby clothes were just about looking cute in photos until I realized half of his afternoon meltdowns were because he was sweating in some synthetic blend zipper-thing a relative gifted us. Babies can't keep stable their own body temperature. When they get hot, they get mad. When they get itchy, they scream.

I finally got fed up and ordered the Organic Cotton Baby Bodysuit from Kianao. It's the sleeveless one. I stripped him out of the polyester nightmare and put him in this. The organic cotton is thin, ridiculously soft, and most importantly, it has no scratchy tags at the back of the neck. He used to do this weird, thrashing neck-scratch routine right before he lost his mind, and that completely stopped once we switched fabrics. It has an envelope shoulder which means when he inevitably has a blowout, I can pull the whole thing down over his legs instead of dragging a soiled collar over his face. It's just a well-engineered piece of clothing.

We also have their Bamboo Baby Blanket in the universe pattern. It's incredibly soft and the planets are visually interesting, I guess. I bought it because bamboo is supposed to be breathable and hypoallergenic. To be completely honest, mostly it just ends up bunched at the foot of his crib because he kicks it off the second I put it over him. It makes a great floor mat for tummy time, but as a sleep cover for a kid who moves like a windmill, it's just okay. It survives the washing machine well, though.

If you're tired of dealing with heat rash and unexplained fussiness, just look through Kianao's organic baby clothes and get a few basics. It removes one major variable from the crying equation.

Nightmares and sleep glitches

There's a specific type of panic reserved for when you finally sit on the couch with a hot cup of chai, and suddenly you hear a blood-curdling shriek from the bassinet. You sprint in there, heart in your throat, only to find him lying there with his eyes closed, breathing evenly.

People always ask on the forums why do babies cry in their sleep. It used to terrify me until my pediatrician explained active sleep. Babies spend half their sleep time in REM cycles, which are chaotic and noisy. Their nervous systems are basically doing a software update while they dream. They whimper, they grunt, they let out single, sharp cries, and they're not even awake. I spent the first two months rushing in and scooping him up at the first sound, which ironically just woke him up and made him actually cry. The hardest thing I had to learn was to pause at the door and stare at his chest for ten seconds before intervening.

The urge to run away

We need to talk about the dark moments. The moments when you've checked the diaper, fed him, burped him, changed his clothes, swaddled him, and he's still screaming loud enough to rattle the windows. The colic phase. The rule of threes. Three hours a day, three days a week, for three weeks. It's mental torture.

There will be a night where your shoulders are up around your ears and you feel a very real, very scary surge of anger. Your brain is swimming in stress hormones. When this happens, put him safely on his back in the crib, walk out of the room, and close the door. Go to the kitchen. Drink a glass of cold water. Stare at the wall for ten minutes. He is safe in the crib. The crying won't damage him in those ten minutes, but your exhausted, frayed nervous system might make a mistake if you don't step away. This is the single most important piece of advice they give us in nursing school to prevent shaken baby syndrome. Walking away makes you a good mother.

You survive this part

You will get through the newborn trenches. The screaming eventually turns into babbling. You will learn the difference between his hunger cry, which sounds frantic and rhythmic, and his tired cry, which is nasal and whiny. You will stop needing the pediatrician to validate every single instinct.

Before you go down another late-night rabbit hole, maybe just make sure his environment is as comfortable as possible so you can cross that off the list. You can find some genuinely breathable options in the baby blankets collection. Now go to sleep while he's sleeping. Seriously.

Late night internet searches answered

Is it normal for my baby to cry every time I put them down?

Yeah, unfortunately. They're neurologically wired to think that if they're not touching you, they might be abandoned in the wilderness. It's deeply annoying when you just want to eat a sandwich with two hands. Try a baby carrier so they get the body heat while you get your hands back.

How do I know if they're crying from pain or just tired?

Pain cries are entirely different from the fussy tired whimper. A pain cry is sudden, high-pitched, piercing, and usually involves them holding their breath for a second before letting out a massive wail. They might arch their back aggressively. If it sounds like they stepped on a lego, it's probably pain. Check for hair tourniquets on their toes, check their temperature, and call the doctor if you're worried.

Can babies manipulate you by crying?

My mother-in-law loves this theory, but no. A four-week-old doesn't have the cognitive capacity to scheme and manipulate. They don't have object permanence yet. They're just a biological alarm system responding to a need. You can't spoil a newborn by answering the alarm.

When should I actually call the pediatrician about crying?

Call them if the cry sounds weak, like a kitten mewing, rather than a robust scream. Call if the crying is accompanied by a fever of 100.4 or higher in a baby under three months. Call if they've been screaming inconsolably for over two hours and nothing is working. Honestly, call if your gut says something is wrong. I've never met a pediatric nurse who minded a parent calling to double-check.

Do pacifiers actually help or just cause problems later?

I resisted the pacifier for two weeks because I read some blog about nipple confusion. Then I caved at 4 AM and it was magical. Non-nutritive sucking is a massive calming mechanism for their nervous system. Worry about weaning them off it when they're two. Right now, survival is the goal.