If you feel exhausted all day but wide awake at night, you’re not imagining it. Feeling tired but wired is a common sleep pattern. Hormones (like estrogen and progesterone), stress hormones (like cortisol), and sleep cycle disruptions can all play a role — and it shows up more often in women, especially around your period or during perimenopause.
Here’s the uncomfortable truth: Women just sleep worse.
About one in four women in the U.S. struggles with insomnia symptoms, and research suggests that we’re 40% more likely than men to deal with it. Also not fun: 56% of perimenopausal women reported sleeping fewer than the recommended seven hours a night. And about a quarter of those had trouble falling asleep the majority of the week.
This frustrating sleep pattern can leave you feeling “tired but wired” — exhausted during the day, but alert come bedtime. The common culprit: Hormones, including stress hormones, like cortisol, and sleep cycle changes. Behavioral sleep medicine psychologist Dr. Jade Wu tells us what’s happening — and what can help.
Meet Your Hormonal Sleep Squad (and Saboteurs)
Estrogen: This “CEO hormone” wears a lot of hats — but when it comes to sleep, it works indirectly, keeping your mood stable and helping maintain muscle tone (for example: so you breathe better at night), says Wu. Low estrogen can lead to sleep problems, like more wake-ups and poorer quality.
Melatonin: It’s best known as the “sleep hormone” — but it’s not a knockout drug. Think of it like your body’s time manager. It rises to whisper “bedtime” to your brain, then fades at dawn to make way for daytime energy.
Progesterone: The ultimate calm-maker. In part, it helps quiet your brain by regulating your GABA system. “This is a system that interacts with all other brain systems to dampen their activity when needed,” says Wu. Progesterone swings can cause that calm to vanish, leaving your mind noisy just when you want it silent.
When any of these hormones fluctuate — especially during perimenopause — it can disrupt your entire system. Enter: hot flashes, aches and discomfort, and lots of middle-of-the-night or early morning wake-ups — not to mention a higher risk of snoring and obstructive sleep apnea, she says.
“All of the above can contribute to not sleeping restfully at night,” says Wu. The result? You're exhausted but can’t sleep — creating that classic “tired but wired” cycle.
Your Cycle, Your Sleep — What’s Actually Happening
Your best sleep usually hits after ovulation, when progesterone peaks and naturally makes you feel sleepier. We love that for us — but if you’re wondering “Why can’t I sleep before my period?” that’s because the week before it hits, estrogen and progesterone dip, and your sleep quality can decrease right along with them.
As your hormones nosedive, it can also leave you feeling wired and tired — even after sleeping all night.
"They also can contribute to fatigue, though this is harder to draw a direct line for, because fatigue is also caused by [being sedentary], nutrition, mood, and other things that tend to become disrupted in middle age."
And Then There’s Cortisol
We’re not done talking about hormones yet. Enter cortisol: your built-in alarm bell. It spikes when you’re stressed, hyped, or sense something important is happening. Ideally, it chills out at night so you can wind down.
But that doesn’t always happen. “When we are chronically stressed and don't have time to properly rest, exercise, and process our thoughts [or] emotions during the day, our cortisol can stay stubbornly high, even into the night,” says Wu.
It can make it hard to rest — even if you’re ready to knock out after a long day. And since we rely on sleep for reducing stress hormones, missing out can leave you stuck in a pattern of no rest.“Sometimes people feel ‘tired but wired,’ where their energy is depleted but they don't feel relaxed enough to fall asleep — this can reflect high cortisol,” she says.
So…Is It Stress or Your Hormones?
Sometimes it’s both, and they love to tag-team. “For women in perimenopause — which can start as early as age 35 — estrogen/progesterone levels can fluctuate less predictably. It's tricky because this can cause both sleep problems and mood/anxiety problems, and it can be hard to tell which factor is impacting sleep more,” says Wu.
Her advice: If you know what’s stressing you — say something external, like a big work meeting or a to-do list that won’t quit — try to resolve it. But if you can’t pinpoint a clear stressor, hormone swings may be driving it.
Either way, don’t skip the basics:
Consistent bed and wake times
Morning light (a sun lamp works too)
Daily movement (the standard rec: 30 minutes/day)
Balanced meals
Hydration (about nine cups a day is ideal)
They’re simple for a reason — they work.
When to Talk to Your Doctor
As we’ve talked about, women are more prone to sleep issues…but they’re also less likely to speak up about them. Close to half of the women surveyed said they don't talk to their doctors about their sleep health, according to the Academy of Sleep Medicine, and wind up missing out on specialist referrals more often than men.
“Frankly, I recommend every perimenopausal woman start the conversation with their doctor about sleep — even if [she’s] not having symptoms yet. The biggest predictor of menopausal sleep disorders is pre-existing sleep problems before menopause,” says Wu.
She recommends talking to your doctor about:
Allergies
Snoring
Difficulty falling or staying asleep
If your sleep doesn’t feel refreshing
Also, you’ll want to reach out if you have trouble sleeping three or more nights a week for more than three months, which can be a sign of chronic insomnia — or if you have symptoms of obstructive sleep apnea, like waking up gasping.
How to make the most of your appointment:
See a specialist.
A women’s health specialist can help assess hormone-related issues
A sleep specialist can check for underlying sleep issues. For significant insomnia, Wu recommends a behavioral sleep medicine specialist — or someone who practices Cognitive Behavioral Therapy for Insomnia, the gold-standard treatment.
Bring data. Before your appointment, track your sleep — including bed/wake times, middle-of-the-night disruptions, and lifestyle factors, like exercise.
Ask about your options, like hormone therapy (not a cure-all, but could be helpful) or a sleep study, to help get to the bottom of any potential issues.
Talk about red flag symptoms, including signs of:
Sleep apnea, like snoring, gasping awake, morning headaches, dry mouth, multiple bathroom trips at night, or dragging daytime fatigue, says Wu.
Chronic insomnia, if you can’t fall/stay asleep multiple times a week over the course of three or more months
Restless legs syndrome, where you feel a tingling or throbbing in your legs while sleeping
Periodic limb movement disorder, a “lesser known nighttime cousin to restless legs syndrome,” says Wu, where you involuntarily tighten your muscles (usually your legs), disrupting sleep and leaving you exhausted during the day.
FAQs
Why am I tired all day but wired at night?
Fluctuating hormones and stress can play a role. When hormones like estrogen, progesterone, and melatonin are in flux (like during perimenopause or before your period) it can mess with your entire system, disrupting your circadian rhythms. And chronic stress can keep your cortisol levels high — all of which can make you feel tired but wired come bedtime.
Can cortisol cause insomnia?
Cortisol can make it harder to sleep. The hormone is supposed to fluctuate: higher during the day, lower at night. But if we’re chronically stressed — or don’t get enough rest, exercise, mental breaks — it can stay spiked, making the brain feel alert and sleep tougher to get.
Does perimenopause cause sleep problems, like insomnia?
It can. Research shows that up to 42% of perimenopausal women reported insomnia symptoms, and the CDC found that about half aren’t getting enough restful sleep most days of the week. The link between hormones and insomnia? Hormone fluctuations — a special side-eye to estrogen and progesterone — plus vasomotor symptoms, like hot flashes, which can increase nighttime wakefulness.
What is the 10-3-2-1-0 rule for sleep?
This popular-on-TikTok method cuts off certain activities at set times to promote sleep: No caffeine 10 hours before bed, alcohol/eating three hours before, work and stressful activities two hours before, screen time one hour before — and no snoozing at all (that’s the 0). This isn’t an evidence-based “rule” everyone should follow, says Wu — it doesn’t account for personal differences, like how you metabolize caffeine, obligations, or lifestyle factors, or underlying sleep problems.
“Instead, I advise people to generally try reducing caffeine (gradually), stay consistent in their wake-up time, eat nutritious food, and get outdoors for light exposure and exercise during the day,” she says.
How can I reset my sleep schedule if I feel wired at night?
Wu recommends these strategies:
Exercise and soak up outdoor light to regulate circadian rhythms and support your natural sleep drive come nighttime.
Wind down with relaxing evening activities, like stretching, a bath, or deep breathing. It’ll help you feel calm, grounded, and less in your head.
Aim to wake up at the same time every day
Limit late-in-the-day caffeine
Wear breathable, natural fibers to bed (like linen or lightweight cotton), in layers, to set yourself up for maximum comfort.
When should I see a doctor for insomnia?
Both acute and chronic (read: long-lasting) insomnia can impact your health. Talk to your doctor if:
Your sleep is disrupted for three or more nights a week
The pattern lasts longer than three months
You don’t feel rested when you wake up
You have severe daytime fatigue
You have symptoms like loud snoring or gasping while you sleep
The bottom line: Sometimes, hormones and stress (we see you, cortisol) can run the show — and leave you feeling tired all day and wired at night. But they don’t have to keep you up. Know what’s normal (enter: sleep tracking), what’s not (persistent insomnia), and when to call in the specialists. Now, go reclaim your Zzzs.