Trainers

All of our trainers are certified, which means they’ve been trained in anatomy, physiology, and nutrition. They understand that no two bodies are alike and will work with you to get fit at the right pace.

Maribelia Avalos Shisslak

Founder and Lead Professional Fitness Instructor

Maribelia is also the President of MasFIt, which she founded in 2006 to promote fitness and healthy living among Latinos in the Denver Metropolitan Area. Maribelia is frequently contracted to provide fitness and life coaching by community-serving institutions such as the American Diabetes Association, LiveWell Colorado, Clinica Tepeyac and Aurora Community Connections. Independently, Maribelia also provides personal fitness trainings to individuals interested in more concentrated fitness regimens and one-on-one coaching.

She been featured in The Denver Post, Viva Colorado and Univision, among other notable media. In 2013, she received a “Woman Who Has Changed the Heart of the City” Award from the Denver Rescue Mission.

Maribelia is from Michoacán, Mexico. She graduated from Adam’s State College in Alamosa Colorado in 2008 having received a Bachelor’s of Science in Business Administration with concentrations in Accounting, Marketing, Economics, Finance and Business Management with a Minor in Math. She also received a Bachelor’s of Arts in Spanish. Maribelia resides in Sloans Lake.

Rully Kusumah

Professional Fitness Instructor

My name is Rully Kusumah and I’m from Bandung, Indonesia. My fitness specialty is Functional Training, Muscle Hypertrophy and Kickboxing.

I found a passion for fitness at a young age when I was introduced to, and then enrolled in, martial arts classes. Since then, my pursuit to deepen my knowledge about the trade, has also helped shape most of my professional and personal life. It is something I truly enjoy and feel enriched by.

My hope is to bring this experience to clients, and to help change their fitness journeys in the simplest and most realistic way possible. My philosophy is that everyone deserves the right to feel good, to be healthy, and to be happy with themselves inside and out.

When you come to my workouts, you’ll learn to utilize techniques that have value both in and outside the gym. That’s because I strongly believe in equipping client’s with the capacity and know-how to become independent gym goers and seek a life of fitness for themselves. And of course, I’m happy to help in their journey along the way.