Stephanie v. Oorschot

White Collar Boxer - Psychologist

"As a psychologist, I participated in a boxing match to experience first-hand how my clients feel under extreem pressure. Ronald helped me develop responsiveness and self-confidence in high-stakes situations while staying calm and reflective. Standing in my corner, he created the safety I needed to face one of the biggest challenges of my life. This experience strengthened my trust, resilience, and inner power — lessons I now carry into my work."

Erick Goedhart

A-Class Kick Boxer - Kick Boxing Coach

"Ronald's game-like training method has been an eye-opener for me. He has helped me further develop my boxing skills and apply them tactically in kickboxing. I now understand the game on a deeper level. As a result, I've refined my teaching skills from a strategic perspective, leading to more engaged and motivated participants."

Bart Koomen

Sambo Champ NL - BJJ Coach

"Ronald is my role model as a kickboxing coach. He coaches intuitively, with a focus on competency development. He taught me to meticulously analyze techniques, considering both the big picture and crucial details. With a strategic mindset, he plans ahead in both coaching and kickboxing, shaping my own coaching ethics."

Dr. Berit Lindemann

Scientist - Entrepreneur

"Ronald is a down-to-earth coach who truly puts his clients first. He tailors programs to your needs, actively guides you, and challenges you to push your limits at an up-tempo pace. Thanks to him, I built a solid foundation for long-term strength and energy. Beyond training, his coaching helped me grow personally, boosting my self-confidence in ways I hadn’t expected. Working with Ronald is both effective and enjoyable—I highly recommend him."

Rolf Dekens

Award-Winning Cinematographer

"Filming in over 60 countries for Netflix, Universal, Disney… you’re always ‘on’. When I landed back in Amsterdam, Ronald became my reset. We trained every day. He reads exactly what I need — physically and mentally. We worked hard, laughed harder, and by the time I flew out again, I was stronger, sharper, ready for anything. Ronald delivers. Every time."

Manon Thomas

Celebrity - Mrs. Europe 1988

"Ronald is an all-round sports coach with an exceptional understanding of people. He is fully dedicated to his clients, creating an environment of trust, motivation, and personal growth. His approach helped me handle the high psychological pressure of my work, and kickboxing became my ultimate tool for conditioning, focus, and relaxation.”

B.M.

Former Special Forces Operator

"Ronald and I completed a Team Leader VIP Protection training led by one of the world’s most prestigious special operations units. During that time, I got to know Ronald as the best buddy you could wish for — unstoppable, with a sense of humor that kept us laughing, even under pressure."

Dr. Junda Kel

Global Director - Pharming Group

"I trained with Ronald for two years and truly enjoyed every session. He always keeps the bigger purpose of the training in mind, which is invaluable when you hit a rough patch. Outside of training, he taught me a new approach to nutrition that made a real difference. And last but not least, Ronald’s dark sense of humor and his ability to laugh at himself made even the toughest sessions feel lighter."