The major bedtime mistake that’s wreaking havoc on teens’ sleep — and what to do instead

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Yang, A. (2026, October 21). The major bedtime mistake that’s wreaking havoc on teens’ sleep — and what to do instead. New York Post. https://nypost.com/2026/10/21/health/major-bedtime-mistake-thats-wreaking-havoc-on-teens-sleep/

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New York Post · collected 2026-10-21 · by Allie Yang

Quick Summary

A new study reveals that teenagers who use their phones late at night get less sleep and experience disrupted rest compared to those who do not. The research, conducted by New York scientists using smartphone apps and Fitbit devices, shows that for every half-hour spent on a phone after 10 p.m., teens fall asleep 26 minutes later and receive 12.9 minutes less sleep than usual. Specifically, each additional minute of phone use in the last five minutes before sleep correlates with about one more minute of wakefulness right after falling asleep. Social media apps like TikTok, YouTube, and Snapchat are particularly problematic, as teens spend an average of 44 minutes per night on these platforms after 8 p.m., significantly impacting their sleep patterns.
Written locally by qwen2.5:14b on 2026-10-21, using this article's own text rather than the other coverage of the same event (that is the story summary below).

AI analysis runs on qwen2.5:14b, locally

Story summary

Dr. Daniel Bigman, a child and adolescent psychiatrist and sleep medicine physician at Northwell Health, warned that disrupted sleep in teenagers can lead to higher stress levels, increased anxiety, and even depression. According to new research using smartphone apps and Fitbits, teens who use their phones late into the night fall asleep later and get less sleep overall. For every 30 minutes spent on phones after 10 p.m., teens fell asleep 26 minutes later and woke up 11 minutes earlier, losing crucial hours of sleep needed for brain and body development. Teenagers require up to 11 hours of sleep per night compared to adults' recommended 7 to 9 hours, making adequate rest essential for their health and well-being.

Written for “Teens' Sleep Issues” on 2026-10-21, grounded in this article and the 0 other(s) covering the same event.
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No political leaning scored for article 97186 · logged 2026-10-21

Story

📰 Teens' Sleep Issues
Health · 1 article(s) covering the same event.

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Claims extracted
42
sentences that state something as happening or true
Uncertain
2%
1 of 42 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
66/100
New York Post's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
1
Health
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-10-21 · how these are computed

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Source leaning vs. consistency

Publisher

New York Post · 12553 article(s) · 33 correction(s) detected
Running correction rate · 33 correction(s)

Who wrote this

Allie Yang
30 article(s) here · 1 carrying a prediction
🔮 His advice is for teens and folks of all ages: Keep a good nighttime routine and sleep hygiene — and your body will thank you.
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🔮 You might not turn into a pumpkin, but at midnight, your brain could be undergoing a dramatic transformation.
Also by Allie Yang
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 30 articles by Allie Yang →

Topics

American Fitbits New York Northwell Health The Post

Subjects

Bigman PERSON · 3× American NORP · 1× Burning the midnight oil PERSON · 1× Daniel Bigman PERSON · 1× New York GPE · 1× Northwell Health ORG · 1× The Post ORG · 1× TikTok ORG · 1× YouTube ORG · 1×

Narrative

Disrupted sleep in teens “can induce higher stress levels, more anxiety and even contribute to a depressed mood,” Dr. Daniel Bigman, a child and adolescent psychiatrist and sleep medicine physician at Northwell Health, told The Post.
framing: assertive · carried by 1 article(s) · first seen 2026-10-21
🔮 His advice is for teens and folks of all ages: Keep a good nighttime routine and sleep hygiene — and your body will thank you.

Claims (42 extracted, 1 hedged)

They actually need more ZZZ’s than adults — up to 11 hours, compared to adults’ seven to nine hours— to support their rapidly developing brains and bodies. asserted
They → need → brains
That’s why losing sleep night after night is more than a bad habit. asserted
losing → ’ → habit
It has major consequences as teens grow into young adults. asserted
teens → have → adults
Disrupted sleep in teens “can induce higher stress levels, more anxiety and even contribute to a depressed mood,” Dr. Daniel Bigman, a child and adolescent psychiatrist and sleep medicine physician at Northwell Health, told The Post. asserted
Bigman → induce → Post
Plus, “it can cause daytime sleepiness, lower motivation and even difficulty with impulse control or decision-making,” he added. asserted
he → cause → control
“Every amount of sleep that’s lost is important because of these consequences.” asserted
that → lose → consequences
New research shows that a habit most teens are guilty of makes it harder for them to catch that quality slumber: Staying up on their phones. asserted
them → show → phones
Researchers from New York used a smartphone app and Fitbits to measure phone activity and sleep. asserted
Researchers → use → activity
They found that teens who spent more time on their phones late at night fell asleep later and got less sleep. asserted
who → find → sleep
For every 30 minutes on the phone after 10 p.m., teens fell asleep 26 minutes later, woke up 11 minutes later and got 12.9 minutes less sleep, compared to their usual sleep habits. asserted
teens → fall → habits
Separate research found that more than half of American teens are on their phones for an hour or more between 10 p.m. and 6 a.m. on school nights. asserted
half → find → nights
Whether they used their phones directly before sleep also mattered. asserted
used → use → sleep
Those who were on the phone in the five minutes before falling asleep had more disrupted sleep, especially during the first half hour. asserted
who → fall → hour
To be exact, they found that each additional minute on their phone (within five minutes of falling asleep) made them wake up for about a minute after they went to sleep. asserted
they → find → sleep
Teens were mostly on social media, including TikTok, YouTube and Snapchat, when they were supposed to be winding down for bed. asserted
they → include → bed
They were on social media after 8 p.m. for an average of 44 minutes per night, while other app categories accounted for less than six minutes a night. asserted
categories → account → minutes
Social media was also used on more than half the nights measured. asserted
media → use → nights
Why it matters asserted
it → matter → ?
Bigman, who didn’t participate in the new study, notes that it’s not just social media that can mess with sleep — it’s “any kind of activity.” asserted
it → participate → activity
“Phones can be stimulating. asserted
Phones → stimulate → ?
And things like social media, videos, texting, notifications, lights, these are all signals to the brain that get transmitted through our senses, eyes and ears,” he said. asserted
he → transmit → senses
“It tells our brain to stay alert when it really should be winding down. asserted
it → tell → brain
The light, especially, signals the brain it’s time to be awake, messing with the body’s natural sleep-wake cycle, he said. asserted
he → signal → cycle
This research improves on previous studies that analyzed self-reported data on smartphone use, which can be inaccurate. asserted
which → improve → use
Researchers in this study used more objective measures through direct smartphone monitoring and Fitbits. asserted
Researchers → use → monitoring
Bigman says this more reliable data provides additional evidence backing our hunch that being on our phones into the night is no good. asserted
being → say → night
“Overall, we can say that from the study, we’re getting more specific advice or specific support towards reducing phone usage and reducing stimulation in the evening, especially before bedtime,” Bigman said. asserted
Bigman → say → bedtime
His advice is for teens and folks of all ages: Keep a good nighttime routine and sleep hygiene — and your body will thank you. asserted
body → keep → you
“The idea should be that we want to limit phone use before sleep time, and we want to instead replace bedtime routines with other types of winding-down activities that may not be as stimulating,” he said. uncertain
he → want → activities
“Reading, music, relaxation exercises and stretching; other activities that we know promote a sleep environment.” For your kids, encourage good habits rather than laying down the law. asserted
we → know → law
“My advice isn’t to try to punish teens for their day-to-day activities or their want to access their phones,” he said. asserted
he → try → phones
Third-party tested and with rave reviews, Cymbiotika Liposomal Sleep Complex uses natural ingredients, including magnesium and L-Theanine, to support relaxation and better sleep. asserted
Complex → test → relaxation
Sports Research Sleep Complex promotes restful and restorative sleep. asserted
Complex → promote → sleep
Made with a blend of magnesium, melatonin and herbs, it’s simple to take and delivers deep rest. asserted
it → make → rest
For those who aren’t fans of melatonin, we suggest Wondersleep Mushroom Gummies from Plant People. asserted
we → suggest → People
The delicious gummies are made from elderberry and reishi, Corydalis, and GABA to calm your mind and help you rest. asserted
you → make → mind
Body temperature and sleep are connected. asserted
temperature → connect → ?
For hot sleepers, we recommend these cooling sheets from Olive + Crate, which are buttery smooth and keep you chill all night long. asserted
which → recommend → you
The padded silk mask gently hugs the face and blocks out all light. asserted
mask → hug → light
Released after three years of advanced product testing, it offers a cocoon-like experience that users love. asserted
users → release → that
…and 2 more, not listed.
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