It's 11:45 pm. Your teenager is "just finishing something" on their phone. Tomorrow there's a 6 am lift or an early practice, and getting them out of bed is going to feel like negotiating a hostage release. If this is a nightly occurrence in your house, you've probably already tried the obvious fixes — earlier curfews, phone confiscation, empty threats about screen time. And you've probably noticed that none of it actually works for long.
Before you write this off as a discipline problem, it's worth knowing what the research actually says. A randomized controlled trial just published in JAMA Pediatrics looked at exactly this pattern — teens who naturally fall asleep late — and tested whether a short, low-tech intervention could shift it. The results are encouraging, and they're relevant to almost every family I work with on Cape Cod, especially the ones with kids in year-round sports.
Why Your Teen's Body Clock Is Working Against You
Here's the part most parents don't know: a delayed sleep onset in teenagers isn't usually a willpower problem. During puberty, the body's circadian rhythm — the internal clock that governs when melatonin releases and when the brain is ready to power down — naturally shifts two to three hours later than it was in childhood. A teen who genuinely can't fall asleep before midnight may be doing exactly what their biology is telling them to do.
The problem is that biology doesn't check the practice schedule. Early lifts, 7 am school start times, and weekend tournament call times all assume a sleep-wake cycle that adolescent physiology has already moved past. That mismatch is where the real damage happens — not in one bad night, but in the slow accumulation of a sleep debt that never gets paid back during the school year.
The Study, Briefly
Researchers at an academic medical center followed 80 high schoolers, ages 16 to 19, who all shared one trait: on weekends, they weren't falling asleep until after 1 am. Half the group got a 2-week intervention called the Sleeping Late Teens Program, which had three parts:
One planning session (under an hour) to build a personalized, gradually-earlier sleep schedule
Morning bright-light glasses, worn for 30–60 minutes after waking
Amber blue-light-blocking glasses, worn for 2 hours before bed
The other half just had their sleep monitored, with no changes made.
What Changed — and Why the Method Matters
The intervention group didn't just report feeling better — their biology measurably shifted. Researchers tracked melatonin onset (a direct, objective marker of circadian timing) and actigraphy-measured sleep, rather than relying on teens' own self-report of how tired they felt. That distinction matters: sleep research is full of studies where people think an intervention helped and the data says otherwise. This one had the data behind it.
Compared to the control group, teens in the program:
Shifted their circadian clock about 45 minutes earlier
Slept roughly 47 minutes longer per weeknight
That's a meaningful gain from a 2-week, entirely non-pharmacological approach — no melatonin supplements, no medication, just light exposure timing and a structured schedule.
Why This Matters for Young Athletes Specifically
I coach the Sandwich Girls Lacrosse team, and I see this exact pattern play out every season. Athletes training year-round are already carrying a heavy physical load — practices, lifts, games, school — and sleep is where a lot of that adaptation and recovery actually happens. A teen who's chronically running on five to six hours a night isn't just tired. They're training in a deficit, whether or not anyone in the house is calling it that.
This reinforces something I talk about constantly in the injury-prevention and readiness-screening side of my work: recovery capacity isn't only about whether the body is physically ready to train again. It's about whether the nervous system and circadian rhythm are aligned enough to let that recovery actually happen. A chronically sleep-shifted, sleep-short teen is more likely to show up with the movement compensations and reduced neuromuscular control we look for on a readiness screen — patterns we know are linked to higher injury risk, particularly for the ACL and lower-body overuse injuries that show up so often in cutting and pivoting sports.
The Practical Takeaway
The version of this protocol most families can realistically try at home, without buying anything:
Get outside light first thing. Fifteen to twenty minutes of natural morning light does much of the same circadian work as the light-therapy glasses used in the study.
Dim the lights and screens two hours before bed. If screens are genuinely non-negotiable, blue-light-blocking glasses are a reasonable middle ground.
Shift bedtime gradually, not all at once. The study protocol moved sleep and wake times earlier in small increments over two weeks. Trying to force a sudden hour-and-a-half shift the night before a big practice tends to backfire — it creates a stressed, overtired teenager instead of a rested one.
This isn't about eliminating a teenager's naturally later-shifted rhythm — that's developmentally normal and not something to fight. It's about narrowing the mismatch between their biology and the schedule they're actually living, which is exactly what this protocol was designed to do.
A Note on the Evidence
It's worth flagging that this was a well-designed trial — randomized, with objective biological measures rather than just self-report — but it was still a relatively small sample (80 participants) from a single academic center. The authors themselves note that larger trials are needed to confirm the effect. I'd treat this as strong, promising evidence for a low-risk intervention worth trying, not as a settled, universal prescription.
Source: Wescott DL, Quick AD, Oryshkewych NS, et al. Chronotherapeutic Approaches to Target Insufficient and Late Sleep in Adolescents: A Randomized Clinical Trial. JAMA Pediatr. 2026;180(6):610–618.