Waking up at 4 AM after 40? Here is what changed
Waking at 4 AM since you turned 40? You’re not imagining it. Deep sleep gets lighter with age and short wake-ups become more frequent. This Short sums up what the research says, and one thing to try, in twenty seconds.
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Made with AI. Parts of this video are AI-generated (see “How this was made” below).
What it says
Earlier wake-ups are one of the most common sleep changes in midlife. Studies that measured sleep in the lab found that deep (slow-wave) sleep declines from young adulthood onward, and that time awake during the night tends to rise with age. Adults still need about seven to nine hours, though, so waking early isn’t a sign you need less. The Short ends with a tip from CBT-I: if you can’t drift back, get up, keep the light dim, and return when you feel sleepy.
If it happens to you
Try not to check the clock or reach for your phone. Keep the room dark, breathe out slowly, and let yourself rest even if sleep doesn’t come straight back. A steady sound like brown noise can cover the early birds and traffic that tend to wake light sleepers. Our how much sleep do I need tool shows the ranges by age, and if your mind starts racing once you’re up, the guided meditation for overthinking gives it somewhere to go. For waking in the middle of the night rather than the early morning, see our Short on waking at 3 AM.
This is general information, not medical advice. If early waking is wearing you down, or comes with low mood, a doctor can help.
About these Shorts
Our “If you’re 40+” Shorts look at one way sleep changes in midlife, with the sources listed below. There is no voice: the points appear as text over an AI-made picture of a bedroom at night.
Transcript
There is no narration. The on-screen text, in order:
Waking at 4 AM since you turned 40?
You’re not imagining it.
Deep sleep gets lighter with age, and night waking becomes more common. (Van Cauter 2000 · Ohayon 2004)
Adults still need about 7–9 hours. (National Institute on Aging)
Can’t drift back? Get up, keep the light dim, and return when sleepy. (Sleep Foundation, CBT-I)
How this was made
No voice. The bedroom picture is an AI-generated still image; the text and the soft pad underneath are made by SleepBetter.
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Sources
- Van Cauter E, Leproult R, Plat L. Age-related changes in slow wave sleep and REM sleep and relationship with growth hormone and cortisol levels in healthy men. JAMA, 2000.
- Ohayon MM, Carskadon MA, Guilleminault C, Vitiello MV. Meta-analysis of quantitative sleep parameters from childhood to old age in healthy individuals. Sleep, 2004.
- National Institute on Aging. Sleep and Older Adults.
- Sleep Foundation. Cognitive Behavioral Therapy for Insomnia (CBT-I).
Sleep videos and guided relaxation are for general wellness, not medical advice. If poor sleep is affecting your days, talk to a doctor or a sleep specialist.