01FAT MASS
LOST
12.84 POUNDS OF FAT94.86 LBS82.02 LBS
Eric Viskovicz's Metabolic Mastery Method™
Use weight-loss meds
the right way!
Don't waste your time and money wrecking your metabolism.
Here’s what other programs aren’t telling you, and what they aren’t doing for you.
Measured outcomes at Fitness Retreat.
3–10+ lbs
Pure fat loss measured in one week
Up to 100%
Lean muscle preserved
3–4×
Faster than medication alone
These are examples from measured client outcomes, not typical or guaranteed results. Individual results vary based on starting point, health status, medication, program length, and adherence. Weight-loss medications should be used only under the care of a licensed prescriber.
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This is how you
take back control
of your transformation!
A pill or injection by itself can’t be true health...
A weight-loss medication can shut down your appetite. It cannot tell you how much protein your lean mass needs, how to train, or whether the weight coming off is fat or muscle. This is destroying your metabolism.
You Lose Muscle
That fast drop on the scale isn't always fat. Without enough protein and resistance training, your body breaks down muscle, the engine of your metabolism!
Your Energy Crashes
Eating almost nothing is not a strategy. Not eating enough leaves you tired, foggy, weak, and unable to train hard enough to protect your body.
Your Metabolism Slows
Lose muscle and you burn fewer calories all day. That is why the weight comes back so easily.
The Scale Fools You
A smaller number on the scale does not automatically mean a better result. Fat loss changes the body. Muscle loss only makes you smaller, softer, and weaker.
What Happens When the Medication Stops?
If nothing changed except the prescription, nothing was fixed. The goal is to use the medication as a tool while building the strength, nutrition, discipline, and habits that make the results yours.
THE PROOF: A REAL 12-DAY RESULT
LANCE R. AGE 59
10.4 pounds down.
Lean mass up.
Most programs would celebrate a 10.4-pound drop and stop there. Fitness Retreat measured what actually changed: Lance lost 12.84 pounds of fat and built 2.44 pounds of lean mass.
MEASURED
APR 27 TO MAY 9, 2026
WHAT ACTUALLY CHANGED
He lost fat. Not muscle.
That difference matters. Muscle drives metabolism, strength, shape, and the ability to keep weight off. Weekly hydrostatic testing showed exactly what to adjust in Lance's food and training.
STARTING WEIGHT
244.8 LBS
ENDING WEIGHT
234.4 LBS
PROGRAM
12 DAYS
Drag the cube or use the controls
Fitness Retreat was built to solve this.
Eric Viskovicz created Fitness Retreat in 1997 because guessing does not work. His system combines body-composition and metabolic testing, measured nutrition, serious training, and behavior coaching. Every decision is tied to what your body is actually doing.
Test. Don't Guess.
Four full-body tests measure fat, lean muscle, metabolic speed, posture, and training capacity. The plan starts with your numbers—not a template.
Feed the Muscle
Medication makes it easy to under-eat. Your test results determine the protein, carbohydrates, fats, and calories in every chef-prepared meal.
Train for the Result
This is not a spa. Expect 5–7 hours of structured daily movement and training, matched to your fitness level and built to burn fat while protecting muscle.
Fix the Real Problem
Weight gain is a symptom. Coaching gets to the habits, triggers, and decisions underneath it so the same pattern does not keep running your life.
Take the System Home
The work does not end when the stay does. You leave with a clear plan, the FitCulture app, and the tools to keep training, eating, and thinking the right way.
Stop guessing. Start losing fat the right way.
Weight-loss medication can be a tool. It is not the whole plan. Protect your muscle, keep your metabolism working, and build results you can actually keep.
Get My Custom PlanMuscle Loss is the Real Danger
If you just “stop eating” because the meds killed your appetite, you are setting yourself up for failure! When you lose weight too fast without protecting muscle, your body burns that muscle for fuel. This crashes your metabolism and makes the weight come roaring back the second you stop. Don’t just get smaller—get sharper!
Metabolic Mastery™
GLP-1 Pathway
Metabolic Mastery™ - GLP-1 Pathway
Medication is a tool. It is not the final solution.
Watch the fat fall off—and keep the muscle!
Your chemistry has shifted. That means your nutrition and training must shift too! What worked before won’t cut it now. You need a specialized strategy to ensure you’re burning fat, not your strength or your hormones. I’ve spent 3 decades perfecting the blueprint to make sure your medication doesn’t cost you your identity!
Why you need a specialized GLP-1 plan
Stop sacrificing your strength!
The goal is independence—from the scale, from the yo-yo diet, and eventually from the medication itself. It’s time to work with the medicine to build a permanent metabolic engine.
Protect your power and make every pound lost a victory for your health.
This is Metabolic Mastery for GLP-1 Success
The System Behind The Breakthrough Fitness Retreat changes everything — intelligently!
Fitness Retreat changes everything — faster!
Fitness Retreat is not a spa; this is a metabolic lab of transformation. We’ve helped thousands of high-achievers who are “stuck” despite doing all the right things. By measuring your stress response and adjusting your plan daily, we provide the expert structure and scientific precision for you to finally see serious results!
The System Behind
The Success
4 Gold-Standard Tests
Upon arrival, we use Hydrostatic Body Comp and RMR testing to see exactly how much muscle you have and how many calories you’re burning. This is how we ensure you aren’t losing the “good weight.” We measure your progress weekly to keep your metabolism firing!
Precision Fueling
Most people on GLP-1s under-eat protein. We fix that. Every meal is chef-prepared and measured to the exact gram to protect your muscle, stabilize your energy, and fuel your brain while the fat disappears.
High Performance Strength Training
We don’t do “skinny-fat” cardio. Your days include 5–7 hours of strategically structured training designed to signal your body to keep its muscle. From morning hikes to targeted strength work, we build the engine that keeps you lean.
Behavioral Architecture
Identify the habits that led to weight gain in the first place. We use this time to retrain your brain and your palate, replacing old triggers with high-performance discipline so you don’t need a “crutch” forever.
Independence for Life
Your transformation continues through our exclusive App. We provide the accountability and the exit strategy you need to transition off medication (if that’s your goal) while keeping the results you worked for.
4 Gold-Standard Tests
Upon arrival, you undergo Hydrostatic Body Comp, RMR (Resting Metabolic Rate), VO2 Max, and 3D Body Scan Testing. This is the foundation of your personalized plan & how we measure your progress weekly.
Engineered Nutrition
Every meal is chef-prepared and measured to the exact gram of protein, carb, and fat your body needs based on your data.
High-Performance Training
All fitness levels welcome. 5–7 hours of training tailored to your specific fitness level data to ensure every minute in the gym drives maximum results. We start the day early with scenic morning hikes and a variety of high-energy, fat-burning activities throughout the day.
Life Coaching & Workshops
Identify your triggers and what’s holding you back. Replace bad habits with positive, high-performance habits. Learn how to get rid of negative thinking and build mental resilience.
Achieve Lifetime Results
Your transformation continues at home through our exclusive App. We provide the structure, recipes, and accountability you need to ensure the weight stays off and your new habits become a permanent way of life.