Screens and Children's Sleep: Why They Sleep Badly

Child who struggles to fall asleep, wakes at night, is tired in the morning? Evening screens are a prime suspect. And not only because of blue light — there's a second mechanism few people know about.

The Two Ways Screens Wreck Sleep

• 1. Blue light: suppresses melatonin, the hormone that signals it's time to sleep. The brain «thinks» it's still daytime.
• 2. Dopamine arousal: stimulating games and videos leave the brain on alert. Even with the screen off, it takes minutes for the nervous system to calm down.

The second is often underestimated — which is why blue-light filters alone don't solve it.

The Real Effects

• Longer time to fall asleep and night waking
• Lighter, less restorative sleep
• Irritability, poor concentration and falling grades the next day

The Evening Routine That Works

• Screens off 1 hour before: no tablet, phone or TV in the last hour.
• Device-free bedroom: the tablet and phone sleep in another room.
• Calming transition: reading, a shower, a chat — low-stimulation activities.
• Same time every night: regularity reinforces the sleep rhythm.

The critical point is that hour-before stop: if it arrives abruptly mid-game, it triggers resistance. That's why Nami Kids closes the evening session with a short story that lowers arousal, instead of a hard block. The same mechanism that avoids shutoff meltdowns also helps with falling asleep.