Team

John F. Groom

Founder

Language: English

John began playing sports as a small child, began working out seriously when he was 12 years old, and has been an entrepreneur since 1987. He has a GFF Pro time of 3:55 and GFF Standard time of 1:29, both leading times for older men.

Bryan Matott

Design Lead

Language: English

Bryan has been with Groom Ventures since June 2020. Since early 2024 he has been working on design, research, and testing for development of Global Fast Fit.

Previously, he held the role of Lead Designer for three years at Rome Technologies, a management software developer. He has a Bachelors Degree in Graphic Design.

Prudhvi Nag

Technical Lead

Languages: English, Telugu, and Hindi

Prudhvi has been with Groom Ventures since 2019. He has a Bachelors Degree in Computer Science & Applications and a Masters in Business.

Previously, he was a Software Engineer at Sigma Info Solutions, Bangalore.

Ketut Adhi

Manager, Bali Team

Languages: English and Bahasa

Adhi has a masters degree in Art Research for Visual Communication. He joined Groom Venture in early 2022 after successfully organizing various charity VGF events and art production for IAH.

Previously he worked on a startup project and creative production as a freelancer.

Natalie

Consultant, Bali, Indonesia

Languages: Indonesian and English

Natalie is a freelance consultant for the Bali Team in the promotion division. She is responsible for promoting all GFF activities in Bali through social media. Natalie has a background as an influencer and a professional model.

Sancita Resen

Master of Ceremonies and Wedding Officiant, Wedding Consultant, Bali Team

Languages: English, Bahasa, and Balinese

Sancita has a bachelor's degree in economics and a masters degree in tourism. He was previously head of public relations at a tech start-up.

San is one of the most popular wedding officiants in Bali, and usually booked many months in advance.

Devi Anggiyana

Trainer, Bandung, Indonesia

Languages: English, Bahasa, Balinese

For me, exercise is more than just a lifestyle; it’s an essential part of my life, shaping both my present and my future. Through strength training, HIIT workouts, bodyweight exercises, and weightlifting, I’ve built a stronger, healthier, and more powerful body.

Made Kariasa

Logistics support, Bali Team

Languages: English, Bahasa, Balinese

Made provides logistics support for the Bali team. He formerly traveled around the world as a cruise ship employee.

Shakayla Aretha Shaima

Manager, Bali Travel Partners

Languages: English, Javanese, Bahasa, Sudanese

Aretha joined the team in 2023 and works on developing the Bali Travel Partners venture. She previously worked for the Virginia Groom Foundation.

Sean Suvanadesa

Project Manager, Bangkok, Thailand

Languages: Thai and English

Sean leads our efforts in Thailand from Bangkok and manages our social media. Sean’s background is in media and event production. He studied communications and public relations at Bangkok University before starting his own company.

Sutinee Rasp

Sponsored Trail Runner, Thailand

Languages: Thai, English

Sutinee Rasp works at Fit Thai and is one of the leading trail runners in Thailand. She is consistently a top performer in her age and gender, and is often sponsored on her runs by Global Fast Fit. She was for a time the world champion in the female division of Global Fast Fit before being overtaken by Kenyan women. Nee is often accompanied to events by her husband Greg, a professional running coach.

Charles Zeng

Ambassador, Dongguan, China

Languages: Mandarin and Cantonese, English

Charles was educated in the US and China, and owns Ironville Gym, a Global Fast Fit partner gym. In 2019, he placed 2nd in Asia in the Spartan Race (18–25 age group) and qualified for the world championship. That year, he also reached the elite CrossFit level by qualifying for a sanctioned event, ranking among the top 1% in the community.

Dr. James Muchiri

Medical Consultant and Regional Manager

Languages: English, Kiswahili and Kikuyu

James was a practicing physician at J.M. Kariuki Memorial County Referral hospital and in charge of Global Fast Fit’s public health initiatives as well as managing the Global Fast Fit team in Kenya.

He graduated with a bachelor's degree in medicine and surgery from Moi University in 2018. Since then he has worked at Machakos Level 5 as a medical officer, Nyahururu County Referral Hospital as a medical officer and Kimanjo Sub County Hospital as the medical superintendent.

Abigael Cheruto Rotich

Coordinator, Kenya

Languages: English, Kiswahili

Abby is a registered nurse and was the valedictorian student at the Kabarak School of Health Science. She is involved with Global Fast Fit events and the related public health initiatives.

Simon Njuguna Muchiri

Club Manager, Kenya

Languages: English, Kiswahili

Simon Muchiri holds a Bachelor of Procurement and Logistics Management from Multimedia University of Kenya, Class of 2020. He currently serves as the Manager of the Riverside GFF Club, and as the Assistant Manager of the Winsim GFF Club.

Andrew Muchiri

Media Manager, Kenya

Languages: English, Kiswahili

Andrew graduated from Moi University with a Bachelor’s degree in Business Management. He currently serves as a videographer and photographer for Global Fast Fit and is passionate about crafting compelling visual stories that drive impact and inspire change.

Simon Ndungu Mucheru

Gym Owner and Trainer, Njoro, Kenya

Languages: English, Kiswahili

Simon Ndungu Mucheru is a dedicated fitness professional and a certified Global Fast Fit trainer passionate about empowering individuals to achieve their health and wellness goals. As the proud owner of Winsim Gym in Njoro, Simon combines his expertise and commitment to deliver personalized training programs that promote strength, resilience, and overall well-being.

Janet Kyalo

Club Manager, Nakuru, Kenya

Languages: English, Kiswahili

Janet Kyalo is a dynamic and accomplished individual pursuing a degree in economic statistics at Egerton University. A certified Global Fast Fit trainer and the reigning GFF PRO Women’s Champion, Janet is passionate about fitness and empowering others to lead healthier lives. As the manager of the Egerton University GFF Club, she leads with dedication, organizing impactful fitness programs and fostering a supportive community.

John Nderitu

Trainer, Nakuru, Kenya

Languages: English, Kiswahili

Training has become my sanctuary, a way to relax and find balance amidst the challenges of life. It has instilled in me a sense of courage and confidence, allowing me to tackle obstacles with resilience. Through consistent exercise, I have achieved remarkable improvements in endurance, strength, coordination, and speed. Not only has it helped me increase muscle strength, but it has also been instrumental in maintaining my overall fitness and well-being.

Kelvin Njihia Kairu

Ambassador, Nakuru, Kenya

Languages: English, Kiswahili

Kelvin Kairu is an accomplished individual with a BA in Economics and History, blending academic insight with a deep passion for fitness. He is currently working as the Global Fast Fit ambassador, where he actively promotes physical well-being, healthy living, and the importance of staying fit. A former rugby player, Kelvin's background in sports has shaped his commitment to physical fitness and personal discipline.

Meshack Simiyu

Club Manager Assistant, Nairobi, Kenya

Languages: English and Kiswahili

Meshack Simiyu, a Bachelor of Education Arts graduate from Kabarak University (class of 2024), is a passionate educator and skilled table tennis coach. A former player for Kenya's National Team, he now serves as the assistant manager of Kabarak GFF Club, where he contributes to its growth through his dedication to teaching and coaching.

Clinton Kavai

Trainer, Nakuru, Kenya

Languages: English and Kiswahili

Clinton Kavai is a dynamic professional with a background in Electrical and Electronics Engineering Management, having completed his Diploma Module 1 at the Kenya Industrial Training Institute. Beyond his technical expertise, Clinton is an avid sportsman with a love for rugby and table tennis, complemented by a strong commitment to fitness. Currently, he brings his energy and skills to GFF as a promotional representative, where he inspires others through his dedication and enthusiasm.

Sanyu Roberts

Fitness Instructor: Sastos Health Club, Kampala, Uganda

Languages: Swahili, English

Uganda Advanced Certificate of Education (UACE), Kagadi Academy. Exercise became a vital part of my recovery from addiction, transforming both my body and life. It improved my health, energy, and sleep while helping me master physical tasks. Fitness became my anchor, fostering resilience, self-discipline, and personal growth.

Muduwa Brenda

Sponsored Boxer, Kampala, Uganda

Languages: Swahili, English

Muduwa Brenda, also known as Ring Beast, is a 20-year-old Ugandan boxer in the Flyweight category. She has been boxing for nearly three years and competes in the Uganda Boxing Champions League. Passionate and determined, she dreams of representing Uganda globally and winning gold. In February, 2025 she was sponsored by GFF in a championship match in Nigeria.