MEET YOUR COACH
My name is William Barthau, and for over 20 years, I've dedicated my life to high-performance training.
As a former professional rugby league player,
I competed for the Catalans Dragons in the Super League and proudly represented the French National Team, including two Rugby League World Cups. Those experiences taught me that lasting results come from discipline, consistency, and intelligent programming, not shortcuts.
Today, I help professionals, parents, athletes, teenagers and anyone committed to improving their health build stronger bodies,
move with confidence, and perform at their best.
Every program is personalized to your goals, fitness level, and lifestyle. Whether your objective is fat loss, muscle gain, improved mobility, athletic performance, or simply feeling healthier, my coaching is designed to deliver sustainable results.
My mission is simple: help you become stronger, healthier, and more confident while making fitness a lasting part of your life.
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CERTIFICATIONS
As a certified personal trainer, I believe education is just as important as experience.
Certifications ensure that every program is built on proven training methods, safety, and the latest exercise science.
They allow me to deliver effective, personalized coaching while giving my clients
the confidence that they're training with a qualified professional.
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Build trust through a personalized approach that considers your health, lifestyle, and goals.
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Create customized training plans designed to improve strength, fitness, body composition, and overall well-being.
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Track your progress and adjust your program to keep you motivated and achieving results.
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Provide professional, evidence-based coaching while maintaining the highest standards of safety, education, and client care.
Sports Performance
Specialist Program
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Specialized in athletic performance training, including movement assessment, strength and conditioning, speed, agility, power development, and sport-specific programming to help athletes maximize their potential.
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Trained in designing personalized fitness programs for women that account for hormonal changes, life stages, strength development, and long-term health and performance.