It is 10pm in Karachi. Your three-year-old has been watching cartoons for an hour. You finally take the phone away, expect them to sleep in twenty minutes, and two hours later they are still bouncing off the walls. You wonder if your child just does not need sleep. They do. The screen is the problem.
This is Part 3 of our screen time series for Pakistani parents. In Part 1 we covered the official WHO screen time limits by age. In Part 2 we tackled screen-time tantrums and how to take the phone away without a meltdown. This article focuses on the specific damage screens do at night — and the bedtime routine change that most parents say works from the very first day they try it.
Quick note: This guide is for parent education, not medical advice. If your child has persistent sleep problems, night terrors, or snoring, please speak with a paediatrician.
What actually happens when a child watches a screen before bed
Most parents know "screens before bed are bad." But knowing the biology makes you take it seriously.
Your child's brain makes a hormone called melatonin when it gets dark. Melatonin is what makes a child feel sleepy. It usually starts rising about an hour before the body wants to sleep.
The LED screens on phones, tablets, and televisions emit blue light. Blue light tells the brain it is daytime. Even 20–30 minutes of screen time in the hour before bed is enough to delay melatonin production by 1–2 hours in a young child. The child is not being difficult when they cannot sleep at 9pm after watching a screen at 8pm. Their brain, chemically, believes it is still afternoon.
There is a second problem on top of the melatonin issue: the content. Fast-paced cartoons and short-form videos raise heart rate, cortisol, and alertness. The brain does not switch off the moment the screen does. Research from the American Academy of Sleep Medicine consistently shows children who use screens in the hour before bed take longer to fall asleep, wake more often during the night, and get less total sleep than children who do not.
Over time, chronic poor sleep in young children affects attention, language development, emotional regulation, growth, and immunity. A tired child is not just grumpy — their brain is not doing the repair and consolidation work that only happens in deep sleep.
How bad is the problem in Pakistan?
No large-scale Pakistani sleep study exists for under-fives, but the picture is consistent with what parents report. Evening screen use is extremely common in Pakistani households: screens are often used to keep children occupied while parents cook dinner, handle chores, or rest after work. Dinner itself frequently happens later in the evening. The result is that many children in Karachi, Lahore, and Islamabad are on a screen from roughly 7–9pm — exactly the window when their brain most needs to be winding down.
Summer holidays make this significantly worse. School-year routines disappear, afternoons get hot, evenings are when everyone is awake, and screen time can shift entirely to the night.
The 3-step screen-free bedtime routine
This routine does not require you to be perfect. It requires you to be consistent. Most parents who try it report their child falling asleep faster within 3–5 nights.
Step 1: Hard screen cut-off 60 minutes before sleep (not negotiable)
Pick the time you want your child asleep. Count back 60 minutes. Screens end then, every night. Not "after this video." Not "five more minutes." At the clock.
The 60-minute buffer is the minimum needed for melatonin to begin rising naturally. In the first few nights your child will protest. Hold the line without arguing — go straight to Step 2.
Step 2: Replace the screen with something their hands can do
The biggest mistake parents make is turning off the screen and then saying "go to sleep." A child who has been stimulated for an hour cannot switch off like a lamp. Their nervous system needs to wind down through something low-stimulation and physical.
The best options for the 60-minute wind-down window:
- Building with blocks or bricks — repetitive, absorbing, no winner or loser, naturally slows the pace
- Puzzles — focused, quiet, and there is a satisfying end-point that signals "done"
- Drawing or colouring — dim the room slightly; the quieter light starts signalling sleep
- Stacking and sorting toys for younger children (ages 1–3) — simple hands-on play with low stimulation
The rule: the activity needs to be ready before the screen goes off. Do not ask a wired child to hunt for a toy. Have it on the table.
Step 3: Same bedtime sequence, every night
After the hands-on play, move into the fixed sleep sequence: bathroom, pyjamas, one short story, lights out. This sequence — done identically every night — becomes a biological signal. Within two weeks, your child's brain will begin preparing for sleep the moment the sequence starts, even before they are in bed.
The order matters less than the consistency. Whatever your sequence is, make it the same every single night.
What about infants and toddlers under 2?
The WHO recommends zero screen time for children under two, including television in the background. For this age group, there is no "safe" amount of evening screen time. Bedtime should be a sequence of feeding, bathing, and skin-to-skin holding with very dim light and a calm voice. Screens should not feature in the environment at all.
The most common objections — answered
"My child won't sleep without the screen." This is common and completely reversible. What has happened is that the screen has become a sleep association — the child's brain only knows how to enter sleep with that input. It takes 5–7 consistent nights to replace the association with the new routine. It is uncomfortable for both of you for those nights. It is worth it.
"I'm too tired to do a full routine." The routine only needs 20–25 minutes of your active involvement: put the activity down, sit nearby, then run the sleep sequence. The rest is your child playing while you rest on the sofa next to them.
"My child shares a room with older siblings who watch TV at night." This is genuinely hard. A blackout curtain partition, headphones for older children, or moving the younger child's sleep time earlier (before the older children's screen time) are practical options.
A note on summer evenings in Pakistan
Pakistani summers mean late sunsets, power outages that shift everyone indoors in the evening, and long holidays with no fixed wake-up time. This is exactly when bedtime screens go from a habit to a dependency. Consider the summer evening as an opportunity, not a problem. Long evenings with no school the next morning are actually the easiest time to run the wind-down routine in full — there is no morning panic, and you can let the child play with blocks for a full 45 minutes before sleep.
Frequently asked questions
Does screen time before bed affect children's sleep?
Yes, significantly. Blue light from screens blocks melatonin production for up to 2 hours, making it harder for children to fall asleep. Fast-paced content also raises cortisol and alertness. Children who use screens in the hour before bed take longer to fall asleep, wake more often, and get less total sleep.
How long before bed should I turn off screens?
The minimum is 60 minutes. For children under five, 90 minutes is better. The earlier you end screen time in the evening, the more naturally your child's melatonin will rise and the easier bedtime becomes.
My toddler only sleeps with cartoons on. What do I do?
The cartoons have become a sleep association — your toddler's brain has learned to associate that input with falling asleep. You need to replace the association, not just remove the screen. Start a consistent wind-down sequence: dim light, quiet hands-on toy, then story in bed. It takes about 5–7 nights of consistency to establish the new association. The first 2–3 nights are the hardest.
How many hours of sleep does my child need?
The National Sleep Foundation recommends: newborns 14–17 hours, infants 12–15 hours, toddlers (1–2 years) 11–14 hours, preschoolers (3–5 years) 10–13 hours, school-age children (6–13 years) 9–11 hours. Most Pakistani children with heavy evening screen habits are getting 1–2 hours less than this.
What is the best bedtime routine for a child who uses screens?
End screens 60 minutes before target sleep time. Fill that 60 minutes with low-stimulation hands-on play: blocks, puzzles, or drawing. Then follow the same fixed sequence every night — bathroom, pyjamas, one story, lights out. Repeat the same sequence nightly; within two weeks your child's brain will begin preparing for sleep the moment the routine begins.
Is blue light from tablets different from TV screens?
The effect is the same — blue light delays melatonin — but the distance matters. A tablet held 30cm from a child's face delivers significantly more retinal exposure than a TV across the room. Tablets and phones in the hour before bed are more disruptive to sleep than background television, though both should be avoided.
