Zeus Athletics Bodyfat Calculator

Sign up to the Zeus Athletics legion and receive the FREE bodyfat calculator to see your bodyfat percentage and check how much protein you need to maintain muscles while shredding fat.

Fatloss is a numbers game

Torch fat and reveal the muscles underneath

personal trainer heist op den berg hardwig aerts

Hi, I’m Hardwig, the founder of Zeus Athletics. For most of my life, I’ve been where so many of you might find yourselves right now—frustrated, overwhelmed, and feeling stuck in the never-ending cycle of trying to lose weight, stay healthy, and build the body I wanted.

No matter how hard I worked—sometimes hitting the gym 5 or 6 times a week—I never seemed to achieve the results I dreamed of. The scales either didn’t move, or worse, they crept up. Clothes never fit quite right, and I found myself caught in a whirlwind of self-doubt, constantly worried about what others thought of me. It was exhausting.

On top of that, diabetes runs in my family, and every life change—whether it was a new job or a big move—seemed to come with an added layer of stress and unwanted weight gain. I felt buried in a mountain of conflicting advice, unsure of what would actually work. Like many, I tried everything, but nothing gave me the lasting results I craved.

It wasn’t until I took control of my own journey that things began to change. I became a NASM-certified personal trainer, diving deep into the science-backed foundations of fitness.studied Hollywood trainers and the principles they used to get their clients in shape. I finally understood what works, what doesn’t, and why so many of us feel lost in our efforts to improve our health. For the first time, I wasn’t just working out—I was working smart, and the results followed.

Are you ready to take your transformation to the next level?

A hollistic approach to transformation!

Look better, feel better

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As a registered user, you'll have...

I. Zero guesswork

Planned custom workouts with easy-to-follow video instructions. Predetermined reps and sets for optimal results.

II. Workout smarter

Pair your wearable and generate biometric data which are displayed in a handy dashboard for both you and your coach.
Integrations with Apple Watch, Apple Health, MyFitnesspal, Garmin, Withings, Fitbit

III. Adapt to your schedule

The 12 week transformation allows you to easily change workout days with a drag and drop system so that it’s planned to your needs and your lifestyle.

IV. Nutrition made simple

Worried about your macro’s, nutrients and calories? We take that worry away with predefined nutrition plans that are easy to follow and do not require complex ingredients.

V. Join the tribe: community access

Connect with like-minded warriors striving for greatness, just like you. Share wins, swap tips, and stay inspired every step of your journey. Together, we conquer!

VI. Master your habits

From nutrition tips to daily routines & recovery methods, this program helps you create sustainable changes that align with your goals. Start small, stay consistent, and watch your progress soar!

Let's get started!