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Blog/5 min read

3 Ways to Increase Deep Sleep Naturally

By Martha Lewis3/18/2026
3 Ways to Increase Deep Sleep Naturally

If you're sleeping but never feeling rested, the problem isn't how many hours you're getting — it's the quality of those hours.


Specifically, it's deep sleep. And if your body isn't getting enough of it, no amount of extra time in bed is going to fix that exhausted, wired, half-awake feeling you wake up with every morning.


I've worked with hundreds of people with this exact pattern, and I can tell you: light, restless sleep is not normal. There are real physiological reasons your body won't drop into that deep, restorative state at night — and once we find them, we can fix them.


The Story That Says It All


One of my clients, Samantha, didn't think she had insomnia. She'd say, "I'm sleeping, but I'm not really sleeping."


For years it was manageable — a few rough nights around her cycle, a supplement would help, she'd feel better, then slide back again. But over time, her sleep kept getting lighter and more fragile. She described feeling half-aware all night long.


Eventually it escalated to consecutive nights with almost no sleep. She had to take medical leave from her hospital job because she was afraid of making a mistake with a patient.


Here's the thing: she didn't have some dramatic infection or mysterious disease. Her body had slowly become depleted and dysregulated — to the point where it wouldn't allow her to drop into deep sleep anymore.


Once we identified why her sleep was so light and made targeted changes, her sleep gradually deepened. She went from a couple of decent nights a month to only a couple of off nights a month. Four hours of deep sleep became five, then six, then seven to eight hours consistently.


That's what's possible when you stop guessing and start testing.


Why Your Sleep Keeps Getting Lighter


If your sleep feels light and restless, one of three things is usually happening.


1. Cortisol Is Spiking at Night


You probably know cortisol can keep you awake — but it can also cause light, fragmented sleep even when you do fall asleep.


Cortisol is supposed to rise in the morning to wake you up and taper off at night. When it starts releasing at night instead, you get that half-asleep, tossing-and-turning state. Eventually it will start waking you up completely — often around 2, 3, or 4 AM — and make it hard to fall back asleep.


To test this properly, I use the Hormone Zoomer — a urine test that shows what your cortisol is doing throughout a full 24-hour period, including the middle of the night. A saliva test only gives you a snapshot; this shows the full picture.


But here's the important part: I don't just want to lower cortisol and call it a day. Cortisol is there for a reason. It's responding to stress or inflammation. We need to find out why it's elevated — because that's the actual problem.


2. Chronic Inflammation Is Driving That Cortisol


Most of the time, nighttime cortisol spikes are the body's response to inflammation. Any kind of chronic low-grade inflammation tells your body it's under stress — and cortisol shows up to help.


The tricky part is that you often can't feel it. Sometimes people know they're inflamed (aches, puffiness, soreness). But a lot of the time, there are zero obvious signs.


Common hidden sources of inflammation I look for:


- Toxins — heavy metals and environmental chemicals overload your detox pathways, causing a buildup that drives inflammation

- Gut pathogens — parasites, H. pylori, and bacterial overgrowth release toxins inside your body, even if you're doing everything right on the outside

- Hormonal imbalances — these can also contribute to the overall inflammatory picture


I use the Gut Zoomer to assess gut inflammation and pathogen load, and the Total Tox Burden test to see what's contributing to your overall toxic load. Standard blood work often misses this — inflammatory markers can look fine while something else entirely is the actual driver.


3. Your Neurotransmitters Are Depleted


The third reason sleep stays light is brain chemistry — specifically neurotransmitters like serotonin, GABA, and dopamine.


Almost all of my clients are deficient in at least one of these. They get depleted when:


- The body is chronically stressed and burns through them faster than it can replenish them

- Gut health is compromised (up to 90% of neurotransmitters are made by good gut bacteria)

- There's a genetic predisposition to low production

- Key nutrients — fats, amino acids from protein, B vitamins, and minerals — are missing or not being absorbed properly


I use a Neurotransmitter Test that looks at 30 different neurotransmitters to see exactly what's going on. Yes, I've heard the argument that neurotransmitter testing isn't perfectly accurate. But what's being excreted in urine still gives us meaningful clues — and I've seen too many clients improve dramatically when we support the imbalances we find on that test to dismiss it.


The Bottom Line: Test, Don't Guess


If you've already tried sleep hygiene, supplements, dietary changes, and standard blood work and nothing has stuck — it's time to actually find out what's going on inside your body.


Light, restless sleep that doesn't resolve on its own isn't a willpower problem or a lifestyle failure. It's a sign that something physiological is suppressing your deep sleep, and it can be found and fixed.


Ready to Find Out What's Keeping You From Deep Sleep?


Inside my Complete Sleep Solution Program, we run targeted functional lab testing to identify exactly what's suppressing your deep sleep — and build a clear, step-by-step plan to address it.


If you're ready to stop guessing and finally understand what your body needs, click the button below!

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