What I Learned Wearing a Continuous Glucose Monitor (CGM)...And Why Healthy People Should Try One

Lessons from a real metabolic experiment inside the Fixed Nation Elite Team

One of the most fascinating learning experiences we’ve had recently inside Fixed Nation was experimenting with Continuous Glucose Monitors (CGMs).

Our Elite Team members received and wore a Lingo CGM for two weeks and tracked what happened to their blood sugar throughout the day.

The goal was simple: learn how daily life actually affects our metabolism.

But what we discovered turned out to be far more interesting than any of us expected.

Why Someone Might Use a CGM

Most people think glucose monitors are only for people with diabetes.

But that is changing quickly.

More and more healthy people who care about longevity and metabolic health are using CGMs periodically throughout the year to better understand their bodies.

Why?

Because a CGM shows something that most lab tests cannot.

It reveals how your body responds to your daily life in real time.

A CGM can show the impact of:

• foods and meal composition

• meal timing

• exercise intensity

• stress

• sleep quality

• alcohol

• fasting

• and even your morning hormone patterns

Instead of guessing what works for your body, a CGM lets you see your metabolic responses clearly.

Once you see those patterns, you can begin to adjust your habits with much greater precision.

Our First Surprise: How Easy CGMs Are to Use

One thing our group immediately noticed was how simple the experience was.

Many people worry that wearing a CGM will be uncomfortable or complicated.

But the reality surprised everyone.

The device was:

• easy to apply

• pain-free

• small and unobtrusive

• simple to track through the app

Most of us forgot we were even wearing it.

Instead of feeling like medical equipment, it felt more like a fitness tracker for your metabolism.

What a CGM Is Actually Measuring

One important thing to understand is what the CGM is really measuring.

The sensor is not sitting in your bloodstream.

Instead, it sits just under your skin and measures sugar in the fluid around your cells.

Because of that, there is usually about a 30-minute delay between when you eat something and when the number starts to rise on your monitor.

So the CGM isn’t meant to show an exact second-by-second number.

Instead, it helps you see patterns.

It shows things like:

• how high your sugar rises after eating

• how long it stays up

• how quickly it comes back down

And those patterns tell us a lot about how well your metabolism is working.

What Healthy Glucose Patterns Look Like

For most healthy people, blood sugar stays between 70 and 140 most of the time.

After a meal, it’s normal to see a small bump.

But in a healthy body, that bump comes back down within two or three hours.

Healthy patterns usually look like this:

• small rises after meals

• a steady return back to normal

• stable numbers overnight

The patterns that worry us more look like:

• very high spikes

• big swings up and down

• numbers that stay high for a long time

• fasting numbers slowly creeping upward

Those patterns can be early signs that insulin resistance may be developing.

Exercise and Blood Sugar

One surprising thing many people notice on a CGM is that exercise can raise blood sugar.

At first, this sounds like a bad thing.

But it’s actually a healthy response.

When you exercise hard, your body releases hormones like adrenaline. These hormones tell your liver to release sugar into your bloodstream so your muscles have fuel.

Your muscles then use that sugar for energy.

So in this case, the spike is coming from inside your body, not from food.

And here’s another helpful trick:

One of the best ways to lower blood sugar after a meal is simply to go for a walk.

Your muscles act like a sponge, soaking up sugar from the bloodstream.

Even 10 minutes of walking after a meal can make a big difference.

Why Morning Blood Sugar Can Be Higher

Many people notice their sugar is higher in the morning, even if they didn’t eat anything.

This is called the Dawn Phenomenon.

In the early morning hours, your body releases hormones that help wake you up and get you ready for the day.

One of the things these hormones do is tell your liver to release some sugar into the bloodstream.

This effect can sometimes be more noticeable in people eating a lower-carb diet, because their insulin levels tend to be lower.

In most cases, a slightly higher morning reading does not mean something is wrong.

It’s just your body getting ready for the day.

Alcohol and Blood Sugar

Alcohol can also affect blood sugar in interesting ways.

When you drink alcohol, your liver focuses on breaking down the alcohol first, because your body sees it as a toxin.

While the liver is busy doing that job, it temporarily stops releasing sugar into the bloodstream.

This can make blood sugar appear lower or flatter for a while.

But sometimes the next day, blood sugar rises a bit as the body resets.

This is one reason alcohol can sometimes make metabolism feel a little off the following day.

Stress Raises Blood Sugar Too

One of the most powerful lessons from this experiment was seeing how much stress affects blood sugar.

Stress on the body can come from many sources:

• illness

• poor sleep

• overtraining

• aggressive fasting

• rapid weight loss

• emotional stress

• demanding workdays

When stress happens, hormones like cortisol rise.

These hormones tell the liver to release sugar into the bloodstream.

Sometimes elevated glucose readings are not about diet at all.

They are about how much stress the body is carrying.

A Behind-the-Scenes Look at the Fixed Nation Elite Team

This CGM experiment was one of the most fascinating things we’ve done inside the Fixed Nation Elite Team this year.

I meet with my Elite Team members every 2 weeks to discuss personalized strategies that help them tackle their biggest obstacles and develop personalized strategies for continuously moving forward in their health.

During this experiment, members explored their glucose responses in many different ways.

Some members tested favorite meals.

Others experimented with favorite foods.

Some of us intentionally tried to see how high we could make the monitor read by eating very high-sugar meals.

Others tested pure sugar alone, and then repeated the test with protein and fat added, to see how combining foods affected the spike.

Several members experimented with alcohol and watched how their glucose changed.

What surprised everyone most was the impact of daily stress.

Normal parts of life—like giving presentations or speaking at meetings—caused noticeable rises in glucose.

That experience reinforced something very important.

Managing health isn’t only about what we eat.

It’s also about how we live.

We all walked away with a deeper understanding of how much controlling stress matters.

We also noticed how much getting a good night’s sleep lowered our glucose levels throughout the following day.

This reinforced the importance of protecting sleep and building strong sleep habits as part of long-term metabolic health.

What made the experience so powerful was that we weren’t guessing.

We were looking at objective data about how our bodies actually behave throughout the day.

The Big Lesson

The biggest takeaway from this experiment was simple:

Your body is constantly responding to your environment.

Every meal.Every workout.Every stressful day.Every night of sleep.

A CGM allows you to see those patterns clearly.

And once you see them, you can start making changes that move your health in a better direction.

Want to Go Deeper Into Your Own Metabolic Health?

Experiments like this happen regularly inside my SWAT Elite Team inside Fixed Nation.

Elite members work directly with me to better understand their metabolism, their habits, and their health patterns.

Inside Elite we:

• review real data together

• troubleshoot plateaus

• discuss fasting, nutrition, and training strategies

• answer personal health questions• and run learning experiments like this CGM experience.

If you enjoy learning about your health and want direct guidance from me, the Elite Team may be the right fit for you.

You can learn more about our team here [Explore SWAT Elite Membership]

Stay Started.

❤️Dr. Erin

Nothing changes if you change nothing.