“I suddenly wake up in the middle of the night, and then I can't fall back asleep until morning.”
“Once I wake up, one thought after another comes to mind, and I can't get back to sleep.”
Waking up in the middle of the night isn't unusual. There are natural points in your sleep rhythm where waking happens more easily, and when worry or tension layers on top, you stay awake and can't drift back off.
Why You Wake Up in the Middle of the Night
While you sleep, your brain cycles between light and deep sleep roughly every 90 minutes. During the light phase, even a small sound, a shift in body temperature, or a fluctuation in stress hormones can be enough to wake you. Normally you'd drift right back into the next light phase, but when you're carrying worries, your sympathetic nervous system tends to dominate, making it hard to fall back asleep once you've woken up.
What Happens When You Check the Clock
Looking at a bright screen to check “what time is it” acts as a trigger that flips your brain's wake switch. On top of that, starting to calculate “I only have this many hours left to sleep” lets anxiety take over, creating a vicious cycle where you become even more awake.
What You Can Try Tonight
1. Revisit Your Bedroom Temperature and Bedding
Feeling too hot or too cold while your body temperature is dropping makes it easier to wake up. Keep your bedroom slightly cool, and adjust your bedding to the season.
2. Don't Check the Clock When You Wake Up
If you wake up, keep your eyes closed without checking the time, and bring your attention to your breath. Not taking in new information keeps your brain from switching into wake mode.
3. Make Time During the Day to Process Worries
Writing down your worries on paper in the evening, rather than right before bed, makes it easier to prevent anxiety from suddenly taking over in the middle of the night.
A Scent to Support Sleep
On a night when worries won't leave your mind and a restless feeling in your chest keeps waking you, No.16 No Worries is worth trying. It was developed for nights when anxiety and tension feel like they're closing in.
Summary
- Waking in the middle of the night tends to happen naturally within your sleep rhythm
- Worry and a dominant sympathetic nervous system make it harder to fall back asleep
- Managing temperature, not checking the clock, and processing worries ahead of time are all effective
- Using scent to support the switch after waking is also an option
If you struggle to fall asleep once you're in bed, also take a look at Why Trying Harder to Sleep Keeps You Awake | How the Brain Stays Wired.
References: General findings from sleep science regarding the sleep cycle (alternating non-REM and REM sleep) and its relationship to the autonomic nervous system.