Abaut Me

About Me – Marcin Brocki

Last updated: November 2025

My name is Marcin Brocki and I am the founder of StartBeFit. For more than a decade, I have been training, testing, learning, and helping people improve their body composition, build strength, and develop healthier habits. I combine practical gym experience with structured education in personal training, nutrition, and supplementation.

I live in Denmark (Egtved), work online with clients from multiple countries, and created StartBeFit as a platform that gives real people simple, realistic, and sustainable plans — without magic shortcuts or fake promises. Training and nutrition should fit your lifestyle, not the other way around.

Core Qualifications

  • A4® Personal Trainer – certified personal trainer (completed in Kraków, 26.06.2024)
  • A4® Specialist in Dietetics and Supplements
  • Comprehensive education in strength training, body composition, nutrition, and supplementation through the A4® Academy platform
  • Experience with weight loss, body recomposition, strength development, and long-term lifestyle transformations

Education & Courses (Selection)

I have completed several dozen specialized courses for trainers, including modules in the following areas:

Training & Performance

  • Fundamentals of Strength Training
  • Training Program Design
  • Functional Training Techniques
  • Endurance Training for Personal Trainers
  • Training Diagnostics
  • Exercise Atlas
  • Mobility 360
  • Practical Stretching Methods

Nutrition, Dietetics & Supplements

  • Basics of Dietetics
  • Advanced Nutrition Systems
  • Foundations of Fat-Loss Diet Programming
  • Sports Nutrition & Supplementation
  • Brain Nutrition Strategies
  • Practical Meal Plan Composition
  • Endurance Sports Nutrition & Supplementation (Live Course)
  • Diet Therapy & Supplementation for Acne (in progress)

Metabolism, Health & Diagnostics

  • Blood Test Analysis for Trainers
  • Metabolic Adaptation & Recovery
  • Why Fat Loss Stops — Practical Solutions
  • Training Diagnostics
  • Foundations of Human Anatomy

Mindset, Coaching & Business

  • Interpersonal Skills for Trainers
  • Motivation & Goal Achievement Strategies
  • Business Essentials for Personal Trainers
  • Sales Skills for Personal Trainers
  • Trainer Marketing Fundamentals

All courses were completed through the A4® Academy education platform, emphasizing practical application with real clients — not just theory. I continuously expand my knowledge to ensure that StartBeFit follows current evidence-based practices and modern fitness standards.

How I Work with Clients

  • Simple, realistic plans that fit your lifestyle, family, and work — not just theory on paper
  • Focus on long-term habits, movement, and nutrition you can actually maintain
  • Clear communication, honest feedback, and no empty promises
  • Respect for medical conditions — if needed, I recommend consulting a doctor or clinical dietitian

When you work with me through StartBeFit, you get a coach who trains, eats, and tests everything himself — using both science and experience to make fitness simple, practical, and effective.