Why Your Brain Won’t Turn Off at Night (And Why Perimenopause and Menopause Can Make It Worse)

Have you ever found yourself lying awake at 3:00 AM, exhausted, but your brain is running a million miles an hour about an email you sent three days ago? You are not alone. Your nervous system, like tons of other busy women, may be on high alert, and it may need a little reset. And unfortunately, no amount of lavender spray is going to fix that.

When you are a busy woman carrying a heavy mental load, sleep isn’t just about being tired. It is about whether your body feels safe enough to let its guard down. Here is what is actually happening in your nervous system when you can’t sleep, why the hormonal shifts of perimenopause and menopause make it worse, and what we actually do in therapy to help you finally get some rest.

The Anxiety-Insomnia Loop

You may be exhausted and able to fall asleep, but when you transition into your lighter forms of sleep around 2:00 or 3:00 AM, all the unaddressed things from the day that are making you anxious come out to play. Or, you may experience difficulty falling asleep because it’s finally quiet, and all the things that you are worried about now are begging to be addressed, so you toss and turn. And if you have had several nights of insomnia or chronic insomnia, it’s common to have anxiety about sleeping through the night and how if you don’t, it will really affect your day tomorrow. This is why so many women connect with the feeling of being “wired and tired.” Your body is exhausted, but your nervous system is in manager mode. It is trying to solve problems, protect you, and plan for tomorrow, which triggers a cortisol release right when you are supposed to be resting.

The Science of 3AM Rumination

There is a biological reason why this happens so often to women. According to a meta-analysis done by Johnson and Whisman in 2013, their findings were that women ruminate significantly more than men. We replay conversations. We anticipate other people’s needs. We carry the invisible mental load of our households and careers. During the day, you are moving too fast to process all of that information. But at night, when the distractions are gone, your brain finally has the floor. It starts pulling up unresolved anxiety, and because your body is lying still in the dark, that anxiety feels massive.

Research by Terauchi et al. (2012) shows a strong bidirectional link between anxiety and insomnia. Anxiety keeps you awake, and being awake when you want to be sleeping creates more anxiety. It is a loop that feeds itself.

How Perimenopause and Menopause Make It Worse

If you are in your late 30s, 40s, or 50s, there is another layer to this loop: your hormones. According to the NIH in 2025, estrogen has direct neuromodulatory effects. It influences your serotonin and melatonin, the exact chemicals your brain needs to regulate mood and initiate sleep. When estrogen begins to fluctuate and decline during perimenopause and menopause, your sleep chemistry gets disrupted.

At the same time, your progesterone levels are dropping. Progesterone acts like the body’s natural Valium; it is calming and soothing to the nervous system. When you lose that natural buffer, your nervous system loses its shock absorbers. This is why a stressor that you could easily brush off in your 30s suddenly feels completely overwhelming at 3:00 AM in your 40s.

How Therapy Helps Break the Loop

If you are stuck in this cycle, sleep hygiene checklists aren’t enough. We need to reset the nervous system. Here is how we do that in therapy:

In therapy, we use CBT-I (Cognitive Behavioral Therapy for Insomnia)

In therapy, we use cognitive restructuring around the anxiety of not sleeping. We change your beliefs about sleep. You learn to tell your brain, “I am resting my body. Rest is valuable, even if I am not unconscious.” We stop fighting the wakefulness.

In therapy, we use EMDR and Brainspotting

If you have had significant problems with insomnia, it is completely valid that you have developed sleep anxiety. EMDR and Brainspotting are great interventions to process the anxiety that you are experiencing that keeps you awake. They also help process the anxiety that goes unaddressed during the day as a busy woman and resurfaces at night. And finally, if you struggle with traumatic or disturbing memories from the past, those often can be contributing to nighttime wakefulness, and these therapies help process those as well.

In therapy, we use DBT Skills and Practical Tools

We use Dialectical Behavior Therapy (DBT) skills to help you regulate your nervous system in the moment. I also personally recommend to my clients to use an eye mask with Bluetooth speakers, you can listen to a really boring book or a Yoga Nidra meditation to help your brain wind down. Sleep apps are also great. Another highly effective tool is writing a worry list and checking your calendar and to-do list before you go to bed, so your brain knows those items are secured and doesn’t have to hold onto them all night.

Ready for a Reset?

You don’t have to just accept exhaustion as a normal part of being a busy woman. If your nervous system is on high alert and you need a reset, therapy can help you process the anxiety that is keeping you awake. I am a licensed therapist offering in-person therapy in Austin and Brownsville, Texas, and online therapy across the state of Texas. Book a free 30-minute consultation today, and let’s help you finally get some rest.

References:

Johnson, D. P., & Whisman, M. A. (2013). Gender differences in rumination: A

meta-analysis. PMC/NIH.

Terauchi, M., et al. (2012). Associations between anxiety, depression and

insomnia in peri- and post-menopausal women. Maturitas.

Garg, S. (2025). Menopause and Mental Health. NIH/PMC.