Personal Trainer, Nutrition Expert and Longevity Consultant
LIFESTYLE SCIENCE
We all want to live a long, healthy life. And modern science has reshaped our understanding of how strongly this is influenced by Lifestyle. How you eat, sleep, exercise and manage stress can make a world of difference in your everyday appearance, how you feel and ultimately your Longevity.
There is no magic, but there ís a strategy. Nathan turns the science into a personalized Lifestyle plan that meets you at your level and improves nutrition, exercise, sleep and more.
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WHAT IS YOUR PRIORITY?
I want to measure, manage, and extend my prime
I want to rebuild my body composition radically
THE LONGEVITY AUDIT
Your body's manual
built on clinical intelligence
1. Baseline identification
Clinical assessments on current biomarkers for Longevity
2. Your personal body manual
Discover your most potent growth areas
3. Your actionable Longevity plan
Spike both Healthspan and Lifespan, the scientific way
THE RECOMPOSITION
High-Impact results through
12-week expert guidance
1. Case definition
Health background, challenges, lifestyle, goal and tests
2. Personalized plan on key areas
Exercise, nutrition and well being essentials
3. Guidance on execution
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1:1 coaching sessions
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Full access to Coaching App
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Progress tracking
and analysis -
Ongoing chat support
MEET NATHAN GUTZ
With over ten years of experience in the Netherlands, Nathan cuts through the noise of conflicting health advice, translating complex scientific insights, often hidden in medical circles, into clear, practical steps.
He brings a level of dedication that far surpasses typical coaching, driven by a genuine commitment to help people live stronger, healthier, and longer lives.
Many approaches focus too narrowly on a single aspect of health. Lifestyle Science addresses the whole system, nutrition, sleep, movement, stress, and recovery. With a comprehensive plan, where the key areas interact, results multiply.
This is the core of our approach, where breakthroughs are the standard.
SCIENCE-BACKED
Rooted in science, proven through experience
HEALTH-DRIVEN
Health is the only
non-negotiable
ON SITE & REMOTE
Efficient and easy to fit into daily life
HIGHLY PERSONALIZED
No two bodies are the same, and neither is your plan
BEHAVIOR CHANGE
Build the right routines and understand the WHY
FULL-SPECTRUM
All areas aligned for maximum impact
LONGEVITY
The art of maintaining a high quality life, physically, socially and even emotionally, while outsmarting the usual decline that comes with aging.
By prioritizing what really matters
OUTPERFORM YOUR BIOLOGICAL AGE
Many people dedicate effort to their health, and that deserves recognition. Yet too often, that energy is wasted on misaligned exercise, a hyperfocus on mainly nutrition, trending supplements, or "hacks" that ignore the bigger picture.
Nathan focuses on the most potent markers that shape your long-term vitality and enhance your overall quality of life.
The power of Exercise
Nothing has a greater impact on your lifespan than physical fitness.
The science is definitive: being highly fit reduces your risk of early death by up to 400% compared to being unfit.
This is why we invest deeply in building your VO2 max (aerobic capacity), muscle mass, and functional strength. These factors influence nearly every health outcome that matters. They provide a protective layer for your body that is more powerful than almost any negative health factor can damage. By prioritizing these capacities, you are stacking the odds in your favor for the long run.
Nutrition: Make it or break it
Nutrition is a daily opportunity to give your body exactly what it needs. We focus on the essentials: the right macronutrients for fuel and recovery, and essential micronutrients for your vital processes. By aligning your nutrition with your specific goals, we take control of your body composition, gut health, and blood sugar levels, without overcomplicating the process.
Well-being & Hormonal Balance
While exercise and nutrition carry enormous weight, sleep, stress management, and daily habits complete the foundation. Optimizing these essentials leads to a healthy hormonal balance, which is the key to:
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Sustained Energy: Eliminating crashes and maintaining mental clarity.
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Metabolic Health: A body that efficiently burns fat and builds lean tissue.
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Overall Resilience: A stronger immune system and higher mental toughness
Driven by lifestyle. Solved by strategy.
COMMON DISCOMFORTS
The human body has an incredible capacity for recovery when the right conditions are met. Many modern discomforts aren’t just "bad luck." They are signals from a system that has lost its balance. By restoring your lifestyle, we address the root cause of these issues in many cases.
Common areas where lifestyle optimization makes a significant impact:
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Unhealthy body composition: Managing weight gain, overweight, and stubborn fat.
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Digestive issues: Reducing bloating and chronic gut discomfort.
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Inflammatory skin conditions: Addressing acne, breakouts, and oily skin from the inside out.
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Energy & Mental health: Managing chronic fatigue, high stress, and symptoms of burnout.
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Metabolic health: Improving insulin resistance and managing (pre)diabetes.
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Hormonal health: Balancing hormones and alleviating menopause-related symptoms.
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Sleep quality: Resolving sleep disturbances or chronic insomnia.
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Immune resilience: Strengthening a weakened immune function.
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Physical discomfort: Reducing persistent joint pain and back pain.
Please note: While lifestyle adjustments lead to significant improvements in the vast majority of cases, coaching is never a substitute for medical consultation regarding serious or acute conditions. Nathan's role is to help you build a rock-solid foundation; your doctor is there for curative care.
FAQ
Do you work with everyone?
Nathan's coaching is for anyone who’s ready to put in consistent effort toward impactful health goals and has a coachable mindset. If you already have some training experience, you’ll have a bit of a head start, but it’s no problem if you’re starting for the very first time. As long as you don’t have major injuries or medical conditions that require specialized care, you can work together.
Nathan believes everyone deserves the chance to improve their health, and is committed to creating a plan that truly moves you forward.
What sets you apart from a personal trainer or a nutritionist?
First of all, Nathan has great respect for both fields. He started as a personal trainer himself, so he knows how much value a high quality trainer can bring to someone’s fitness and overall quality of life. The same goes for skilled nutritionists.
However, his experience shows that these fields on their own do not provide the full answer for longevity. Longevity is about identifying (genetic) risks, reducing them, and improving the most potent markers through an action oriented plan that helps someone get the most out of both their healthspan and their lifespan. Exercise and nutrition remain the main elements, but they become part of a broader strategy designed to support long term health in a proven and sustainable way.
I want to improve my health, but the idea of changing my whole life feels overwhelming. How does the coaching make this manageable?
It is completely normal to feel overwhelmed when you think about exercising or changing things if you’re not used to it. If so, there’s especially major potential for you, since a lot is being left on the table for sure.
Nathan translates his clients’ plans into simple daily actions that grow into routines over time. You are not pushed into a strict lifestyle and you are not expected to be perfect. Nearly all clients experience some ups and downs and still achieve strong results. The goal is a manageable path forward that can be adjusted along the way, not turning your life upside down.
Can I bring my own input and priorities?
Yes, your input is important. That is why we start by giving it plenty of attention. This helps us create plans that suit your unique situation and support your goals. At the same time, the most potent markers for optimizing longevity are clear and require focused work. While Nathan will always do his best to make the plan enjoyable, the goal is still to make progress on these markers. You will learn all about this throughout the process.