Why You Can Sleep Eight Hours and Still WakeUp Exhausted
By Daniel Schotborgh, MD, Holistic GP & Lifestyle Coach | Nut House Ambassador
I hear this almost every week in my practice.
“I sleep. I just don’t feel rested.”
Not “I can’t fall asleep.” Not “I’m up all night.” Just eight hours, sometimes more, and still
waking up tired. Still reaching for coffee before you can think straight. Still dragging by 3pm.
If that’s you, I want you to know something first: this is not laziness, and it’s not just “getting
older.” There is almost always a reason. And most of the time, that reason is stress.
The Pattern I See Again and Again
Here’s what it usually looks like. Life is full: work, family, responsibilities, ambitions. You’re
moving fast most of the day, and your body responds the way it’s designed to: it releases stress
hormones to help you keep up. That’s useful during the day. It becomes a problem at night.
Because your body doesn’t have an off switch that flips the moment your head hits the pillow. If
you’ve spent all day in “go” mode, your nervous system is still in “go” mode when you lie down.
You might fall asleep, but the sleep itself stays shallow. Fragmented. Your body never fully
powers down, even while you’re technically asleep.
That’s the piece most people miss. Sleep isn’t just about hours. It’s about depth.
What’s Actually Happening
During deep sleep, your brain clears out waste products that build up over the day, and it
processes the emotional weight you’ve been carrying. This is when your body genuinely repairs
and resets. When stress keeps your nervous system activated overnight, you spend less time in
that deep, restorative stage, even if you technically stayed in bed for eight hours.
Your cortisol, the main stress hormone, plays a big role here. Elevated cortisol in the evening
keeps your body alert when it should be winding down. And the frustrating part is that you
often don’t feel this directly. You feel it as a foggy morning, a short temper, a body that never
quite catches up.
What the Research Shows
Because stress is so often the driver, some of the most well-studied natural approaches focus
there rather than on sleep itself.
Ashwagandha, an adaptogenic herb used for centuries to help the body manage stress, has now
been tested in multiple randomized, placebo-controlled trials. A systematic review pooling five
of these trials, with 400 participants total, found a small but statistically significant
improvement in overall sleep quality with ashwagandha extract compared to placebo.[1] Other
trials have found it also reduces perceived stress and cortisol levels alongside improving
sleep.[2]
Magnesium tells a similar story. Observational research consistently links lower magnesium
levels with poorer sleep quality, and a randomized, placebo-controlled trial in adults reporting
poor sleep found that magnesium bisglycinate supplementation modestly improved insomnia
severity.[3] Other trials have found improvements in sleep quality, mood, and measures like
sleep duration and sleep efficiency, though researchers are clear the effect is a support, not a fix
on its own.[4]
Neither of these is a sedative. They don’t knock you out. What they seem to do, based on the
evidence so far, is help your nervous system come down from “go” mode, which is exactly the
piece that’s usually missing.
A Small Exercise to Try Tonight
You don’t need a program for this. You need two minutes.
Before you get into bed, sit down and ask yourself one question: what is still running in my
head right now?
Don’t solve it. Don’t plan it. Just name it, out loud or on paper. A work email you haven’t sent. A
conversation you’re replaying. A decision you haven’t made yet.
This isn’t about productivity. It’s about giving your nervous system permission to stop holding
onto it, so it doesn’t hold onto it for you at 2am instead.
Then, close your eyes and take four slow breaths. Breathe in through your nose for a count of
four, and out through your mouth for a count of six, longer on the way out than the way in. That
longer exhale is what tells your nervous system it’s safe to power down. Two minutes of writing,
four breaths. That’s the whole ritual.
Small Things That Help
- Notice before you fix. For one week, rate how rested you feel each morning on a scale
of one to ten. You can’t change a pattern you haven’t actually seen. - Anchor your wake time, not just your bedtime. A consistent wake-up time, even
on weekends, does more for your body’s internal rhythm than an earlier bedtime alone.
Your body learns to expect sleep when the rhythm is steady. - Give your evening a real off-ramp. Ten minutes of something calm, like the breathing exercise above, a slow stretch, or reading, signals to your body that the day is actually done, instead of scrolling straight into sleep.
- Watch what you’re using to cope with the “on” feeling. Alcohol and screens both feel calming in the moment and both interfere with the deep sleep stages your body needs most.
- Support your body with what the evidence backs. Organic ashwagandha and magnesium both have real research behind them for calming an overactive nervous system, not as sedatives, but as support for the part of you that’s struggling to switch off.
- A caffeine-free tea like rooibos in the evening is a simple place to start.
The Bottom Line
Poor sleep quality is rarely about laziness or a lack of discipline. Most of the time, it’s your body still running the day’s stress long after the day is over. The good news is that once you see the pattern, you can start working with it, gently, and one small step at a time. If your sleep problem looks different, if you sleep fine once you’re finally in bed but you keep pushing bedtime later, that’s a different pattern with a different fix. [Read that story here →]
References
- Cheah, K.L., et al. “Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-
analysis.” PLOS ONE, 2021. - Office of Dietary Supplements, National Institutes of Health. “Ashwagandha: Is it helpful for stress, anxiety, or
sleep?” Health Professional Fact Sheet. - “Magnesium Bisglycinate Supplementation in Healthy Adults Reporting Poor Sleep: A Randomized, Placebo-
Controlled Trial.” PubMed Central, 2025. - “Effectiveness of Magnesium Supplementation on Sleep Quality and Mood for Adults with Poor Sleep Quality: A
Randomized Double-Blind Placebo-Controlled Crossover Pilot Trial.” Medical Research Archives, 2024.
