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Margaux Alvarez x 1st Optimal: Where Performance Coaching Meets Hormone Testing, Gut Health and Functional Medicine

Dr. Amber Miller

Functional Medicine Physician, 1st Optimal

You can train consistently, eat well, prioritize recovery and still feel like something is off.

Your energy may not be what it used to be.

Your body composition might stop responding the way you expect.

Recovery may take longer.

Sleep can become less predictable.

Digestion may suddenly become an issue.

Motivation can become harder to sustain, not because you have forgotten how to work hard, but because your body may be giving you information that a training program alone cannot explain.

For people who care about performance, this is an important distinction.

Sometimes the next step is not another workout plan.

Sometimes it is better information.

That is the idea behind the partnership between Margaux Alvarez and 1st Optimal, bringing together Margaux’s experience in performance, fitness, nutrition and mindset coaching with 1st Optimal’s advanced laboratory testing, hormone and metabolic evaluation, gut-health testing and licensed medical oversight.

It creates a more connected approach to performance health.

Margaux works in the world of execution: mindset, nutrition, movement, strength, conditioning, accountability and the habits that need to happen outside the gym.

1st Optimal adds another layer: clinical evaluation and data.

Through its Coaching Partnership Program, 1st Optimal gives performance coaches and other health professionals access to advanced blood work, hormone and thyroid care, GI-MAP gut testing, metabolic health services and medically guided treatment options, when appropriate. 1st Optimal states that these services are backed by licensed medical providers, allowing coaches to continue coaching while medical professionals handle medical evaluation and treatment decisions.

For someone who is already committed to becoming stronger, healthier and more capable, the combination has a simple goal:

Stop guessing about what may be happening inside the body and start making better-informed decisions about what comes next.

Who Is Margaux Alvarez?

Margaux Alvarez has built her career around performance.

She is a seven-time CrossFit Games athlete, fitness coach and entrepreneur who has also competed on NBC’s Titan Games and appeared on two seasons of American Ninja Warrior. Her official biography also lists competition in World Long Drive Golf and Tactical Games, along with coaching credentials including NASM Certified Personal Trainer and CrossFit Level 3 Trainer.

 

But Margaux’s coaching philosophy extends well beyond competition.

Her current coaching system places mindset and nutrition at the foundation, followed by mobility, aerobic and anaerobic capacity, gymnastics, strength and weightlifting. On her website, she describes the approach as a hierarchy of training designed to build mental resilience and physical capability together.

That matters because sustainable performance rarely comes from one variable.

You can have the perfect training program on paper, but struggle if your nutrition is inconsistent.

You can understand nutrition, but struggle if stress and sleep are unmanaged.

You can be disciplined in the gym, but still hit a wall if an underlying medical issue is contributing to fatigue, poor recovery, digestive symptoms or changing hormone function.

Margaux’s coaching options reflect that broader philosophy. Her public programs include personalized training, nutrition guidance, mindset and self-reflection work, accountability, mobility and conditioning. Her Remote 1:1 Coaching program, for example, combines customized programming with nutrition guidance, movement feedback, mindset work and ongoing support.

Explore Margaux Alvarez and Just Gaux

Follow Margaux at @321gaux

That foundation makes the 1st Optimal partnership particularly relevant.

Margaux can help someone execute.

1st Optimal can help investigate the clinical side of the picture.

Why Performance Coaching and Functional Health Testing Fit Together

One of the biggest challenges in fitness is figuring out why progress has slowed.

A plateau does not automatically mean hormones are responsible.

Fatigue does not automatically mean low testosterone.

Bloating does not automatically mean an unhealthy microbiome.

Weight changes do not automatically mean someone needs hormone therapy.

Symptoms can have many causes, which is exactly why responsible healthcare should not reduce every concern to a single explanation.

But symptoms are also worth investigating when they persist.

That is where data becomes valuable.

1st Optimal’s functional health model combines advanced testing and medical evaluation with coaching around nutrition, exercise, sleep, stress and lifestyle. According to the company, the medical team evaluates laboratory results, symptoms, goals, lifestyle and treatment response, while ongoing coaching helps clients put recommendations into practice.

This fills an important gap between two worlds.

A performance coach should not be diagnosing hormonal disorders or prescribing medication.

A physician is not typically standing next to a client during every workout, watching their nutrition habits, helping them develop discipline or building the day-to-day routines required to turn a clinical recommendation into consistent behavior.

The partnership model lets each professional stay focused on what they do.

Margaux’s lane: performance, mindset, movement, nutrition strategy, accountability and implementation.

1st Optimal’s medical lane: laboratory testing, medical history, clinical interpretation, treatment decisions, medication when clinically appropriate and ongoing medical monitoring.

That distinction is important.

It is also one of the biggest potential benefits of a well-structured coach-medical partnership.

What 1st Optimal Adds to the Margaux Alvarez Partnership

1st Optimal describes its model as Functional Health Coaching, Powered by Functional Medicine.

Its current Coaching Partnership Program gives coaches access to services that can include advanced blood work, hormone and thyroid evaluation, metabolic health testing, gut-health testing, physician-guided medical oversight and prescription treatment when clinically appropriate.

That can add several layers of information to a performance plan.

1. Advanced Blood Work

Basic blood work can be extremely valuable, but the question being asked determines which markers are useful.

Someone struggling with energy or recovery may need a different evaluation than someone primarily concerned about digestive symptoms or reproductive health.

1st Optimal’s advanced panels can assess markers related to several systems rather than focusing on one hormone in isolation.

Its women’s hormone panel, for example, currently includes markers such as testosterone, estradiol, SHBG, DHEA-S, progesterone, LH, FSH, thyroid markers, lipids, ferritin, iron, blood counts, metabolic markers, HbA1c, fasting insulin and vitamin D.

The men’s panel includes total and free testosterone, estradiol, SHBG, prolactin, LH, FSH, DHEA-S, PSA, thyroid markers, lipids, HbA1c, fasting insulin, metabolic markers and vitamin D, among others.

This creates context.

A testosterone value by itself is not a complete health assessment.

Neither is estrogen.

Neither is fasting glucose.

Clinical interpretation comes from looking at the bigger picture, including symptoms, health history, medications, lifestyle and laboratory patterns.

That is why testing is most valuable when the goal is not simply to collect numbers, but to understand what those numbers mean for the individual.

Hormone Testing for Women: Looking Beyond a Single Number

Women’s hormone health can change considerably across life stages.

The questions a 25-year-old athlete has may be very different from the questions facing a woman entering perimenopause or menopause.

Symptoms can include changes in sleep, menstrual cycles, energy, mood, libido, body composition, training tolerance and recovery. None of those symptoms proves a hormone disorder on its own, but persistent changes can justify a broader clinical conversation.

1st Optimal’s women’s testing approach can evaluate reproductive hormones while also looking at thyroid, metabolic, cardiovascular and nutrient-related markers.

That broader context can be useful for a woman who says:

“I’m training like I always have, but my body doesn’t feel like it used to.”

Instead of immediately deciding that she needs to work harder, eat less or start a particular treatment, the partnership creates an opportunity to investigate.

For Margaux’s community, that is particularly relevant.

Many high-performing women are very good at pushing through discomfort.

That can be an advantage in competition.

It can become a disadvantage when every new symptom is treated as another obstacle to outwork.

There are times when effort is the answer.

There are also times when the better move is to collect information.

Start With Margaux’s Women’s Hormone Health Quiz

For women wondering whether their symptoms may warrant a deeper conversation, the partnership provides a dedicated Women’s Hormone Health Quiz.

It is not a diagnosis, and a quiz cannot replace medical evaluation. It can, however, help organize symptoms and provide a starting point for deciding whether further evaluation makes sense.

Take Margaux’s Women’s Hormone Health Quiz

Hormone Testing for Men: Testosterone Is Only Part of the Picture

Men’s health conversations frequently start and end with testosterone.

That can oversimplify the issue.

Testosterone is important, but men’s health involves relationships among multiple hormones and physiological systems.

1st Optimal’s men’s hormone testing includes total and free testosterone along with estradiol, SHBG, prolactin, LH, FSH, DHEA-S, thyroid markers, PSA, glucose-related markers, lipids and other health measures.

That means someone dealing with low energy, reduced training capacity or changes in libido is not automatically reduced to one laboratory value.

This matters for athletes and recreationally active adults alike.

If performance begins to change, the immediate instinct is often to change the program:

More volume.

More supplements.

More caffeine.

More cardio.

More intensity.

Sometimes those changes only create more noise.

A clinical evaluation can help distinguish between a training problem, lifestyle issue and something that warrants medical attention.

Treatment decisions should then be based on the overall clinical picture, not on the assumption that every man who wants to perform better needs testosterone therapy.

1st Optimal states that prescription medications are used when clinically appropriate and that ongoing clinical monitoring is part of its functional medicine model.

Start With Margaux’s Men’s Hormone Health Quiz

Take Margaux’s Men’s Hormone Health Quiz

Gut Health: Why Performance Is About More Than Muscles

You cannot talk about whole-body health without talking about digestion.

The digestive system does far more than process a meal.

It breaks food down into nutrients the body can absorb and use for energy, growth and cellular repair. The gastrointestinal tract also contains a large community of microorganisms commonly referred to as the gut microbiome, which participates in digestion and interacts with other physiological systems.

For an active person, gastrointestinal problems can make consistency difficult.

Bloating may make training uncomfortable.

Unpredictable bowel habits can interfere with workouts and travel.

Chronic digestive discomfort can complicate nutrition.

Restricting more and more foods in response can make it harder to meet nutritional needs.

And digestive symptoms are not something that should automatically be dismissed as the price of training hard.

The Margaux Alvarez and 1st Optimal partnership creates a pathway for clients who want to examine digestive concerns alongside the rest of their health.

GI-MAP Testing and the Gut Microbiome

One of the tools available through 1st Optimal is the GI-MAP, or Gastrointestinal Microbial Assay Plus.

The test uses quantitative PCR, commonly called qPCR, to analyze DNA targets in a stool sample. Diagnostic Solutions Laboratory, the developer of GI-MAP, states that the panel evaluates bacterial, parasitic and viral pathogens along with other microbial and intestinal-health markers. Certain versions can include additional markers such as zonulin.

It is important to understand what this means.

A gut test is information.

It is not a diagnosis by itself.

Even the laboratory’s own interpretive materials note that detecting a pathogen does not mean every individual will experience symptoms. Findings need to be considered alongside history, symptoms and the broader clinical picture.

That distinction is central to responsible functional health care.

The goal should not be:

“Something appeared on my stool test, therefore it explains everything.”

The more useful question is:

“How does this information fit with my symptoms, history, nutrition, medications and the rest of my testing?”

That is where medical oversight matters.

Personalized Gut-Health Protocols Instead of Random Supplement Stacks

The wellness industry has made gut health incredibly confusing.

One person tells you to take probiotics.

Another tells you probiotics are the problem.

Someone recommends removing gluten.

Someone else removes dairy.

Then seed oils.

Then grains.

Then FODMAPs.

Eventually a person who started with bloating can end up eating a handful of “safe” foods and taking ten supplements without knowing what they are actually trying to address.

A more structured approach begins with history and symptoms.

When appropriate, testing may provide additional information.

Then a clinician determines whether additional evaluation or treatment is warranted.

A personalized gut-health protocol might involve nutrition changes, sleep and stress interventions, treatment of a diagnosed medical condition, supplementation or medication when clinically appropriate. The exact approach depends on the individual.

That is what “personalized” needs to mean.

Not everyone gets the same probiotic.

Not everyone removes the same foods.

Not everyone needs a stool test.

And not every abnormal result needs treatment.

For people experiencing significant or persistent digestive problems, the medical team can help determine what requires attention and when conventional gastroenterology evaluation may also be necessary.

Start With Margaux’s Gut Health & Food Sensitivity Quiz

The Margaux Alvarez partnership includes a dedicated quiz for people who want to better understand patterns in their digestive health.

Take Margaux’s Gut Health & Food Sensitivity Quiz

The quiz should be viewed as an educational starting point rather than a diagnosis.

It is also worth noting that IgG food-sensitivity blood tests remain controversial. The American Academy of Allergy, Asthma & Immunology states that IgG testing should not be used to diagnose food allergy or food intolerance because IgG may simply indicate normal exposure or tolerance to a food.

That makes clinical interpretation and appropriate referral especially important when someone’s primary concern is a suspected food allergy or food intolerance.

Mindset Still Matters, Even When You Have Better Data

The availability of more advanced testing does not make coaching less important.

It arguably makes good coaching more important.

A laboratory report cannot meal prep for you.

It cannot make you go to bed on time.

It cannot decide whether to train when motivation is low.

It cannot teach you to move well.

It cannot build your strength.

It cannot create resilience.

It cannot automatically turn clinical recommendations into sustainable habits.

This is where Margaux’s coaching philosophy becomes especially relevant.

Her approach starts with psychology and mindset, then builds through nutrition, mobility, conditioning and strength.

That hierarchy reflects something most experienced coaches eventually learn:

Information does not automatically create behavior change.

Someone may know exactly what they should do and still struggle to do it consistently.

That is where accountability and mindset become valuable.

The goal of testing should not be to make someone obsess over biomarkers.

The goal should be to create enough clarity that their effort can be directed more intelligently.

From “Try Harder” to “Let’s Understand What’s Happening”

Consider a hypothetical client.

She trains four or five days per week.

She eats plenty of protein.

She rarely misses workouts.

For years, the routine worked well.

Then something changes.

Sleep becomes lighter.

Recovery takes longer.

Her menstrual cycle changes.

Body composition begins shifting.

She feels more tired.

Her instinct is to reduce calories and add cardio.

A coach’s first job is not to diagnose her.

A responsible coach can examine programming, calorie intake, recovery, training volume and lifestyle.

But if those fundamentals are reasonable and symptoms persist, medical evaluation may be appropriate.

The partnership creates a pathway.

Instead of endlessly changing workouts, a client can speak with the 1st Optimal medical team, review health history and discuss whether laboratory testing makes sense.

Testing may include hormones, metabolic markers, thyroid markers, iron-related markers or other relevant labs depending on the clinical situation.

The results are then interpreted in context.

Margaux can continue helping with training, nutrition, mindset and execution.

The medical team handles medical decisions.

That is a much more useful framework than telling every struggling client to simply “push harder.”

How the Margaux Alvarez + 1st Optimal Process Can Work

Although individual care varies, the process generally follows a progression built around education, evaluation, testing and personalized recommendations.

Step 1: Identify What Has Changed

Start with the actual problem.

Is it energy?

Recovery?

Digestion?

Body composition?

Sleep?

Libido?

Menstrual changes?

Training performance?

Mood?

A combination?

The clearer the starting point, the easier it is to decide what deserves further investigation.

Step 2: Take the Appropriate Health Quiz

The dedicated Margaux quiz pathways offer a simple starting point:

For women: Women’s Hormone Health Quiz
For men: Men’s Hormone Health Quiz
For digestive concerns: Gut Health & Food Sensitivity Quiz

These do not diagnose medical conditions.

They can help someone recognize symptom patterns and determine whether they want to discuss them with the medical team.

Step 3: Book a Health Consultation

Clients interested in going further can book through Margaux’s dedicated 1st Optimal scheduling pathway.

Book a Health Consult Through Margaux + 1st Optimal

The supplied Margaux booking URL currently redirects into 1st Optimal’s booking system.

Step 4: Complete Medical History and Determine Appropriate Testing

Testing should answer a clinical question.

Depending on symptoms, history and goals, the medical team may recommend advanced blood work, hormone testing, metabolic testing or gut-health evaluation.

Not every person needs every test.

Step 5: Review the Results With the Medical Team

Numbers without context can create more confusion.

A clinician can examine results alongside symptoms, medications, medical history and goals to determine what they mean and whether intervention is appropriate.

Step 6: Create the Clinical Plan

Recommendations can vary considerably.

One client may primarily need lifestyle changes.

Another may need nutritional support.

Another may require additional diagnostic evaluation.

Another may be an appropriate candidate for medication or hormone therapy.

The important point is that treatment is based on individual evaluation rather than a predetermined protocol.

Step 7: Execute With Coaching and Accountability

This is where information becomes action.

Training.

Nutrition.

Recovery.

Mindset.

Sleep.

Stress management.

Consistency.

These are the behaviors that Margaux’s work is built around.

Step 8: Monitor and Adjust

Health and performance are dynamic.

1st Optimal’s model includes follow-up, monitoring and adjustments based on symptoms, testing and treatment response.

Margaux’s coaching approach likewise emphasizes progress rather than perfection.

Together, that creates a feedback loop instead of a one-time health snapshot.

Who Could Benefit From This Approach?

The partnership may be worth exploring for adults who are committed to improving their health but feel that something is missing from the standard fitness equation.

That could include someone who:

  • Trains consistently but has experienced a meaningful drop in energy or recovery
  • Has persistent digestive symptoms
  • Wants to understand hormone health instead of guessing
  • Is navigating perimenopause or menopause
  • Is concerned about testosterone or other aspects of men’s hormone health
  • Has experienced unexplained changes in performance or body composition
  • Wants more comprehensive laboratory information
  • Values both medical oversight and practical coaching
  • Wants a personalized health strategy rather than another generic plan
  • Is interested in long-term performance, resilience and healthspan

None of these symptoms automatically means a hormone or gut problem exists.

The value of assessment is determining what the evidence actually shows.

The Bigger Idea: Performance Health Is Becoming More Connected

For decades, health and performance existed in separate boxes.

You went to a doctor when something was wrong.

You went to a trainer when you wanted to get stronger.

You went to a nutrition coach when you wanted to change your diet.

You worked on mindset somewhere else.

The problem is that human physiology does not operate in separate boxes.

Sleep influences training.

Training influences recovery requirements.

Nutrition influences performance.

Stress affects behavior.

Digestive problems affect food choices.

Hormonal changes can influence symptoms and quality of life.

Medical treatment can change training considerations.

Everything interacts.

That does not mean every health issue should be blamed on hormones, the gut or stress.

It means people benefit when qualified professionals communicate and stay within their respective areas of expertise.

That is one of the most interesting aspects of the Margaux Alvarez and 1st Optimal partnership.

The goal is not to replace coaching with medicine.

And it is not to replace medicine with coaching.

It is to connect the two when both are relevant.

Why 1st Optimal’s White-Label Partnership Model Matters for Coaches

The Margaux partnership is also part of a much larger shift in the coaching industry.

Coaches routinely encounter problems that fall beyond their scope of practice.

A fitness professional may recognize that a client is unusually fatigued.

A nutrition coach may hear about menstrual changes.

A performance coach may notice recovery deteriorating.

A health coach may work with someone experiencing persistent digestive symptoms.

Knowing that something deserves investigation is different from diagnosing it.

1st Optimal’s Coaching Partnership Program is built around that distinction.

The company says partners can gain access to white-label fulfillment, medical oversight, advanced laboratories, hormone and thyroid care, gut-health testing, metabolic health services and other clinical options, while the coach maintains the coaching relationship.

This model is designed for professionals including performance coaches, personal trainers, nutrition coaches, functional health coaches, gym owners and wellness practitioners.

For a coach, that can solve a significant operational problem.

Building a medical infrastructure from scratch requires licensed clinicians, laboratory relationships, systems for patient onboarding, medical documentation, compliance processes, follow-up and potentially prescription management.

Most coaches did not start their businesses because they wanted to build a medical clinic.

A white-label or integrated medical partner can provide that infrastructure while allowing the coach to focus on coaching.

For clients, it creates a clearer line between advice and medical care.

Coaches coach.

Licensed providers practice medicine.

The two can support the same health journey without pretending to have the same role.

Learn About the 1st Optimal Coaching Partnership Program

Margaux’s Philosophy Makes This Partnership Different

Margaux’s story is built around performance, but her current message is not that everyone needs to become an elite athlete.

Her website explicitly says Just Gaux is built for real people with busy lives who want to continue showing up, moving and improving from wherever they are starting.

That makes this partnership about more than elite performance.

It is about capability.

Can you train?

Can you recover?

Can you think clearly?

Can you eat in a way that supports your goals?

Can you sleep?

Can you digest your food comfortably?

Can you stay consistent?

Can you continue doing the things you care about as you get older?

A 45-year-old executive, a former competitor, a parent returning to training and an active woman navigating perimenopause may have completely different goals.

But they can all benefit from the same principle:

Use the right information, then act on it consistently.

Frequently Asked Questions

Does working with Margaux Alvarez automatically mean I need hormone therapy?

No.

Hormone therapy is a medical treatment and should only be considered after appropriate evaluation by a licensed medical professional. Testing may show that treatment is inappropriate, unnecessary or that another health issue deserves attention.

What does 1st Optimal test for?

Available testing includes women’s and men’s hormone panels, metabolic and general health markers, GI-MAP testing and other advanced testing options. The exact testing recommended should depend on symptoms, health history and clinical goals.

What is GI-MAP?

GI-MAP is a stool-based test using qPCR technology to evaluate microbial DNA targets and selected gastrointestinal markers. Results should be interpreted alongside symptoms and medical history rather than used as a stand-alone diagnosis.

Is Margaux the person interpreting my laboratory tests?

Medical laboratory interpretation and medical treatment decisions should be handled by licensed healthcare providers. Margaux’s expertise is coaching around areas such as training, nutrition, performance and mindset.

Can testing help explain fatigue?

Testing may identify clinically relevant information, but fatigue has many possible causes. Sleep, nutrition, medications, stress, iron status, thyroid problems, hormonal disorders and other medical conditions can all be relevant. Persistent or severe fatigue should be discussed with a healthcare professional.

Can hormone testing help with performance?

Hormone testing may be useful when symptoms or medical history justify evaluation. It should not be viewed as a shortcut to performance enhancement. Training, nutrition, sleep and recovery remain fundamental.

Should everyone get a gut microbiome test?

No. Testing should be selected based on the individual and the clinical question being investigated.

Can I start with a quiz instead of booking immediately?

Yes. The Margaux partnership provides dedicated women’s hormone, men’s hormone and gut-health quiz pathways that can serve as an educational starting point.

How do I book with Margaux’s 1st Optimal medical team?

Use the dedicated Margaux booking pathway:

Book a Health Consult With Margaux + 1st Optimal

Stop Guessing. Start With Better Information.

Working harder is powerful.

Margaux Alvarez has built much of her career around showing what consistent effort, resilience and discipline can accomplish.

But high performance also requires knowing when effort is not the only variable.

Sometimes your program needs to change.

Sometimes your recovery needs to improve.

Sometimes nutrition needs attention.

Sometimes mindset is the limiting factor.

And sometimes your symptoms deserve a medical evaluation.

The Margaux Alvarez x 1st Optimal partnership brings those worlds closer together.

Margaux brings performance coaching, mindset, nutrition, movement, accountability and years of experience competing at the highest levels of fitness.

1st Optimal brings advanced functional testing, hormone and metabolic evaluation, gut-health testing and access to a licensed medical team.

The objective is not more complexity.

It is more clarity.

Because when you understand what is happening, you can stop throwing random solutions at the problem and start making decisions with intention.

Ready to Find Your Starting Point?

Book a health consultation:
Book With Margaux + 1st Optimal

For women concerned about hormones:
Take Margaux’s Women’s Hormone Health Quiz

For men concerned about hormones:
Take Margaux’s Men’s Hormone Health Quiz

For digestive and gut-health concerns:
Take Margaux’s Gut Health & Food Sensitivity Quiz

For coaches interested in adding functional testing and medical support to their business:
Explore the 1st Optimal Partnership Program

 

Dr. Amber Miller

Functional Medicine Physician, 1st Optimal

Dr. Miller founded 1st Optimal because she saw a gap in the healthcare system — high performers who needed more than a 10-minute appointment to understand what was actually driving their symptoms. She specializes in hormone therapy, metabolic optimization, and performance-driven care, and oversees the clinical protocols used across all 1st Optimal patient programs.

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How 1st Optimal Is Different

Here’s how 1st Optimal is different. We blend functional health coaching and medicine to create a plan just for you. Our health coaching helps with eating, exercise, sleep, and stress, so you can make lasting changes that fit your health goals.



At the same time, our medical team use advanced tests and treatments, like hormone therapy and supplementation, made just for you. We work together to create a plan that gets the best results with the least amount of treatment, optimizing your health so you can uplift others too.

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