Warm up done.
Are you ready to push your limits and become the best version of yourself? Take on the challenge today and start your journey with Colossus Flex. No pain, no gain!

Looking for a coach who tailors everything to your unique goals and preferences? This is your sign to make it happen. Book your session today one-on-one, fully individualized, and 100% focused on you. Available online or offline. No excuses, just results.
Training Plans
Looking for a training plan that aligns with your goals and lifestyle? Our ready-to-go plans are flexible, effective, and designed to help you succeed. Take the first step—start today!
Ready to take the challenge?
Stefan isn’t just a coach; he’s your partner in transformation. A Certified HYROX Coach, Personal Trainer, Nutritionist, and former military service member, Stefan brings discipline, expertise, and over a decade of coaching experience to help you succeed.
With achievements like qualifying for the HYROX World Championships, completing seven half marathons in one week, and being featured in Men’s Health, Stefan knows what it takes to push boundaries. His rule #1? Believe in yourself, take small steps, and aim to do better than yesterday.
Ready to achieve your best? Let’s get started.
Specialties: Strength-Endurance, Performance, Fat Loss, Muscle Building.
Certifications: HYROX Coach, Personal Trainer, Nutritionist.
Proud partner of
