2025 SYNC Summit

Lead Master Trainer Ai Lee has won multiple championships as a member of the Swiss and Malaysian national karate teams. She became a Zumba® instructor in 2010, then a Zumba® Jammer, and eventually a ZES™ for Switzerland and Austria. Ai Lee co-created STRONG Nation® and is also the program’s Lead Master Trainer. She is also a co-creator of the CIRCL Mobility™ Program.

Master Trainer After competing as a professional swimmer as a teen, Alessandro transitioned to dancing and soon became a Zumba® instructor. This opened up a new world to him as a fitness trainer. To feed his passion for collaboration and new experiences, Alessandro became a Zumba® Jammer in 2012.

Master Trainer Aurelio is a Personal Trainer, Group Fitness instructor and a sports lover. As a former professional soccer player from Peru, kickboxing fighter, and Strong Nation® Master Trainer, he believes the most important part of fitness is to ENJOY THE PROCESS. His goal is to bring happiness to your soul while nurturing your body through exercise.

Master Trainer Claudia is a licensed Strong Tech and Master Trainer for STRONG Nation® Germany and a passionate CIRCL Mobility™ Instructor. She loves to push herself and her participants to their limits, fostering physical and mental growth and sharing a journey of movement and self-improvement. She not only loves teaching but also revels in the creative aspects of her job!

Master Trainer A Master Trainer from Taiwan with nearly 19 years of experience, he specializes in group fitness and dance classes. Passionate about making fitness accessible and enjoyable, his goal is to help others improve their health while having fun. Through his expertise and energy, he inspires participants to embrace movement and make fitness a rewarding part of their lives.

Master Trainer Jin Yew born and raised in Switzerland, has been passionate about martial arts since childhood. His journey has taken him worldwide, training in disciplines such as Karate, Kung Fu, Boxing, Krav Maga, Kickboxing, and more. Discovering STRONG Nation® ignited his enthusiasm for blending fitness with combat-inspired movement. Excited to collaborate with the community, Jin Yew aims to help make STRONG Nation® stronger than ever.

Master Trainer Jorge is a martial arts master, trainer, and creator of innovative fitness programs. Based in Colombia, he is passionate about movement and spreading the power of STRONG Nation®!

Master Trainer Karla's STRONG Nation® journey began in 2017, becoming a STRONG Tech in 2020 and a Master Trainer in 2023. Born and raised in Mexico, Karla is a mother of two with a passion for fitness and movement. With a Bachelor’s in International Commerce and a Master’s in Business Administration, she also holds certifications as a Zumba® Instructor, CIRCL Mobility™, AFAA Group Fitness, and Mobility Specialist. She has led virtual and in-person sessions and was a presenter at SYNC Summit in 2022. Dedicated to inspiring others, she thrives on guiding participants through transformative fitness journeys.

Master Trainer and ​​STRONG Tech Lucy is originally from Brazil and was trained in classical ballet at a young age. She was later introduced to fitness competitions and, ultimately, a career as a certified trainer. Today, she is an active STRONG Tech and STRONG Nation® instructor in Los Angeles. She has a passion for fitness, music, and connecting with people from around the world. She believes that we build our legacy through movement, one action at a time. Lucy's mission is to promote health, body synergy, and a balanced lifestyle.

Master Trainer MAI became a Master Trainer in 2021 and a STRONG TECH in 2022. I continue to support SYNCs in Japan and lead global sessions through Move with Masters. I'll continue to share the power of STRONG Nation worldwide.

Master Trainer Natalia is a former ballet and contemporary dancer-turned-PT, functional movement and kettlebell trainer, body language teacher, and karate disciple. Passionate about music, movement, learning, and healthier, happier lifestyles, Natalia became a STRONG Tech in 2018 and an MT in 2021. She is also an International Movement Presenter and Wellness Coach MT, Co-Founder, and Human Experience Director at ADN Wellness since 2015.

Master Trainer Noe is a Master Trainer and STRONG Tech from Argentina, with a deep passion for fitness and empowering others through movement. She is proud to be part of the STRONG Nation® family. Outside of fitness, Noe is an Emergency Medicine physician, dedicated to helping others in critical moments. His journey combines his love for health, fitness, and wellness, inspiring others to lead strong, healthy lives. Whether in the fitness studio or on the frontlines of healthcare, Noe is committed to pushing limits and supporting others in their personal transformations.

Master Trainer Ricardo has been a personal fitness trainer for over 15 years. He’s a Master Trainer for STRONG Nation®, AFAA Certified as a Group Fitness and Kickboxing Instructor, and has NASM accreditation. Ricardo has been recognized as a true leader in the field of fitness, whose core belief is “with sweat and determination you will succeed”! 

Master Trainer Simone is a Master Trainer and STRONG Tech based in the Netherlands, teaching STRONG Nation® since 2018. She became a STRONG Tech in 2021 and a Master Trainer in 2023. By day, she’s a Marketing and Communications teacher, and by night, she runs group fitness classes with her stepmom at their club in Landgraaf. Simone’s fitness journey began during her college years, sparking a lifelong passion. A certified Fitness Trainer, Sports Nutritionist, and Pre- and Postnatal Fitness Specialist, she loves the empowering energy of STRONG Nation®. Her mission is to inspire others to push limits and feel unstoppable.

Master Trainer and STRONG Tech Stephanie began dance lessons at 3 years old and dabbled in sports early in life. Her mental and physical health deteriorated in college after a rough recovery from a knee injury. Stephanie's gateway to her health journey was found in Zumba® in 2010, and she later became a Master Trainer and STRONG Tech for the STRONG Nation® program. Stephanie advocates for work-life balance and enjoys fostering instructor growth and education. Meanwhile, she balances a full-time career as a Doctor of Veterinary Medicine and family life.

Master Trainer Umar Syarief is a well-respected karate athlete and national hero in Indonesia. He has won many international titles and competed in high-level competitions, including the Southeast Asian Games, where he won a gold medal. Umar also trained in various European countries, had multiple knee surgeries, and is now based in Switzerland, where he teaches Karate, Martial Arts, and Functional training. He has been a STRONG Nation® Master Trainer for Indonesia since 2017.