Teenagers need 8–10 hours, and most get under 7 on school nights. The missing hours aren't laziness — they're biology colliding with the bell schedule.
The built-in night-owl shift
During puberty, melatonin release shifts about two hours later. A teen who can't sleep at 10 p.m. isn't scrolling out of defiance — their brain genuinely isn't ready. The debt lands on school mornings and gets 'repaid' with weekend marathons that shift the clock even later.
What actually helps
Anchor the wake time within an hour even on weekends, push bright light into the morning, and move phones out of the bedroom after a set hour — the hardest and most effective step. Caffeine after 2 p.m. is the silent saboteur of teen sleep.
Red flags
Falling asleep in class daily, snoring, or needing 12+ hours regularly deserve a doctor's visit — sleep apnea and delayed sleep phase disorder are common and treatable at this age.
This article is for information only and is not medical advice. If insomnia lasts longer than three weeks, see a doctor.
