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Reliable and committed personal trainers
Amsterdam with 10 years of experience

Inspiring and motivating as a "power couple"
Few people know that we are a married couple. We met years ago as interns in a gym in Amsterdam. Our passion for health has brought us together.
We have built both our bodies and our three companies from scratch, always with a lot of passion, mutual support and perseverance. We are happy to share our experience and knowledge. With us you not only receive guidance, but also motivation and support from a team that really supports your personal growth and has endured all the difficulties themselves.
1 / Gaining and losing weight
Years ago Niels was skinny with little muscle mass. Angela, on the other hand, was overweight and had an unhealthy lifestyle her entire young adult life.
2 / Three companies together
Body Masters, SUPPLEAM® and Training Boutique are all part of our business portfolio.
3 / From the army
Niels served in the Air Brigade, where he discovered the value of discipline and tranquility, elements that now form the basis of his approach.
4/ Tien jaren in hospitality én kustacademie
Angela, a true foodie with a passion for fine dining and hospitality, always looking for the highest quality experiences. With a background in art school, she has a creative mind with an eye for detail and she thinks in solutions that are not always obvious. Fun fact: Angela created this entire website herself! Also nice, as an influencer on Instagram she creates content around fine dining experiences, but also healthy recipes.
5 / Niels kon niet koken
His first meal for Angela was whole wheat pasta without sauce.
Many years later and inspired by Peruvian cuisine, he can now make rice and his own twisted version of Peruvian “lomo saltado”.
6 / Angela, een ras- Amsterdamse met Peruaanse roots
Angela is a real Amsterdam native. She has an Amsterdam father, born and raised in the Red Light District. Her late mother was Peruvian, temperamental to the core.

About Angela Oosterling
BSc Sports Dietitian, NSCA personal trainer, ISAK anthropometrist
Angela is a very experienced and caring coach with a clear mission: to help as many (especially) women as possible build towards a confident, stronger body and mindset.
Her transformative coaching techniques often motivate people to completely reinvent themselves and thus lead to fundamental lifestyle transformations. Always with a no-nonsense, scientifically based approach for lasting results. "How do you treat your body and why?"
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optimize body composition women
lose fat, build muscle
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nutrition and diets
also vegan, IBS and disturbed eating behavior
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low back complications
also for chronic back pain, hernia, lumbago, sciatica

About Niels Duinmaijer
NASM and FMS personal trainer, CIOS exercise psychologist
Niels developed the foundation for his approach during his time in the army. He uses a very calm, yet disciplined approach to guide you through challenging training sessions.
Niels emphasizes the importance of mobility and functional movements. He often receives referrals from chiropractors and physical therapists.
Niels has strong bonds with his clients and feels a deep responsibility for their well-being.
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optimize body composition men
build muscle, gain weight, lose fat mass
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posture corrections and mobility
also for chronic back pain, knee pain and neck pain
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training during illness & stress
also during extreme work and emotional stress