Meet The Mo-Team

Amanda Mittleman signs publishing deal

Amanda Mittleman


Amanda has been involved in the fitness industry since 1995. She is a successful entrepreneur and business owner, certified personal trainer, functional movement specialist, and group fitness instructor. Amanda is a published author and has presented her research for the National Strength & Conditioning Association, California State University, Long Beach, The University of Binghamton, New York, and The University of New Mexico. Amanda has also been featured in many fitness videos including the current top selling infomercial and video set, TurboFire™. In everything she does, Amanda believes in empowering people to take actions everyday towards creating lives that surpass their wildest dreams. She strongly believes that a healthy body is essential for a healthy mind and spirit. Mo-Mentum Fitness began as Amanda’s dream, to create a place which empowers people and redefines fitness and health vital and enjoyable parts of life. Upon completing her Master’s Degree in Kinesiology at California State University, Long Beach in 2009, Amanda created and opened Mo-Mentum Fitness. Today Amanda and her inspiring Mo-Mentum Fitness team, continue to help people bring out their inner super heroes, creating the highest quality, life enhancing fitness programs that are guaranteed to be the best part of your day everyday!

We Transform Lives and Guarantee Results!

Our clients achieve life-transforming results, Whether it’s fat loss, toning muscle, raising energy levels, lowered stress, gained confidence. You will achieve the goals you set for yourself.

Trainers and Group Fitness Instructors

Steve 2

Steve Mittleman

Co-Founder | Olympic Lifting Coach

Steve Mittleman grew up in Southern California and moved to the Long Beach area in 1988. He lifted weights recreationally at LA Fitness and 24-Hour Fitness but never achieved any substantial results, except for a slight increase in strength. Everything changed when he met Amanda; he was inspired by her contagious motivation. When he turned 40, he participated in the Scottish Highland Games, which is a 9-event competition revolved around throwing heavy objects; the most common event is known as the Caber Toss. Since his participation in these games, he has become more involved in strength sports like the Highland Games, Power lifting and Olympic Weightlifting. Listed below are some of the recent events and competitions that Steve has participated in over the past few years:


Alex Williams

Group Fitness Instructor

Alex Williams an amazing, fun and passionate  group fitness instructor with over 20 years of experience.  She teaches Boxing, HIIT, spin and strength based classes.

Hue Ta

Hue Ta

Trainer/ Physical Therapist

Hue began practicing physical therapy in 2005 after receiving her Master’s of Physical Therapy from LSU. While practicing, she continued studying and achieved her Doctor of Physical Therapy in 2009 from Utica College. She has since practiced in a variety of settings, specifically specializing in injury prevention. Her passion towards helping others has continued to expand and she believes that education is a vital component to growing not only as a well rounded clinician, but also a healthier person. She is a certified exercise expert for aging adults and specializes in the Graston Technique and KinesioTaping. Hue is also an avid group fitness instructor, a registered yoga teacher, and a reiki energy healer. 


Deidre Garcia Bondari

Personal Trainer

My name is Deidre Garcia Bondari. I have been in the fitness industry for 26 years. I am a NASM certified Personal Trainer, an IFBB Pro Bikini Competitor, D’s Deivas Competition Coach, Wife and Mother. I have a huge passion and a ton of experience in many areas of the Fitness Industry. I offer 1 on 1 Training, Small Group Training, Competition Coaching, Nutritional Counseling and Lifestyle Coaching. Fitness is my lifestyle and Passion, I hope that I can impact my clients lives and help them realize their goals at whatever level they may be. 


Marlo Tunney

Personal Trainer/Group Fitness Instructor

“I’m a former Firefighter/ Paramedic and I understand the importance of being strong and healthy. I have seen the devastating effects of not eating right and not being active. Our bodies are designed to move. I strongly believe that health and fitness go hand in hand. I have a bachelor of science in kinesiology. I instruct spin classes, and strength and conditioning classes. I want to help people meet their fitness goals by helping them to change their lifestyles so that they embrace exercise, by making it apart of their everyday life. “


Hannah Shu

Yoga and Tai Chi Group Fitness Instructor

In 2008, after 3 car accidents and suffering from the pain of Rheumatoid Arthritis for years, Hannah came to a point in her life where she had to stop working and take care of her body, her mind and her spirit.  Shortly after, she decided to heal herself and learn about the healing powers of Medical Qi Gong, Tai Chi and Yoga by enrolling in the Arizona School of Zen Wellness.

After experiencing her own profound healing through Qi Gong, Tai Chi, Zen Yoga and meditation, Hannah decided to dive even more deeply into these practices and become a teacher (instructor) so she could help others experience healing and transformation, as well.

Hannah not only became an extraordinary teacher, she traveled to China from 2014 to 2016. In China, the homeland of Tai Chi and Qi Gong, Hannah studied under the great Master, Yuan Xiu Gang at the Eastern Health and Spiritual Arts Program.

Hannah has diligently trained & been certified in Medical Qi Gong, Tai Chi (Wu Dang & Yang Style), Yoga & Martial Art (Kung Fu) and she has committed her life to the study of self cultivation with the Easter Health and Spiritual Arts.

Currently Hannah is training to become a Master of Kung Fu, Tai Chi and Qi Gong, which requires 10 years of training, (with her Master) through the lineage Master program. In order to become a Master of Kung Fu, Tai Chi and Qi Gong, one must master their own body, mind and spirit, and then they must master the art of teaching. The philosophy is that the body is a warrior, the mind a scholar, and later on spirituality you must become a saint. At the base of all of Hannah’s classes is a (much needed) focus on breathing exercises, meditation and energy.


Carleen Dinh

Group Fitness Instructor

Carleen brings an abundance of sincere quality of instruction coupled with challenging and powerful movements to her Barre class. Come prepared to get your butt kicked in this moderate energy class designed to lengthen, strengthen, and tone muscles with an emphasis on the gluteal muscles.

Yumi Yamagishi- Thumb

Yumi Yamagishi

Group Fitness Instructor

Yumi is our World Class Turbo/HIIT group fitness instructor.

Born in Japan Yumi has lived in the US for almost 20 years.  When she moved to America, Yumi did not have a background or even much interest in fitness.  It was actually by accident that she took a Turbo Kick class 20 years ago and from that day on she has been passionate about fitness.

When one of Yumi’s favorite instructors (the incredible Chalene Johnson) told her that she should become a group fitness instructor because she was so inspirational, Yumi listened. It wasn’t long after that Yumi became a certified Group Fitness Instructor.   Today at Mo-Mentum Fitness we are all grateful Yumi chose to share her passion with others because Yumi’s energy is contagious and transformational.

Fitness changed Yumi’s life for the better.  She gained vibrant energy, lost fat, gained confidence and felt better all around.   Today, Yumi thrives on sharing fitness and empowering our member’s.

Yumi is also Mo-Mentum’s official Fitness Police Woman and our Fitness Stalker!  She will make you sweat, lovingly nudge you to push a little bit harder and make you smile and laugh every time you see her challenge you to live your most extraordinary life!

Elana Schoenberger

Elena Schoenberger

Yoga Instructor

Elena believes yoga has transformational powers beyond what one can imagine.  After practicing yoga for 8 years, she realized it wasn’t enough, and she needed to share what she discovered.  In 2017, Elena received a 200-hour Power Yoga training certification, and in 2018 she received a Yin Yoga Certification.  She is currently completing an additional 300-hour Advanced Yoga Training Certification. Elena’s mission as an instructor is to teach what she has learned in her own practice, which is how to heal from the inside out.  Her teaching mantra is to guide students through yoga inspiring them to strengthen and open the mind and body to bring freedom and peace to the soul. Elena’s classes are intentionally highly motivational. Each and every theme and playlist is carefully prepared for the yogi to take the mental experience of yoga, as well as the physical practice, off the mat into their everyday life.  In addition to teaching yoga, Elena is a certified Strategic Interventionist and she also earned a degree from UCLA in Women’s Studies with an emphasis on Psychology and Health.


Michael Thantrong

Group Fitness Instructor

“I live in Long Beach but grew up in Orange County. I attended OCC and rowed crew. After OCC I trained in kickboxing and Muay Thai on and off for 6 years. I stopped training to go back to school and complete my BS in human services from CSUF.  I have been a group fitness coach since 2014 and have a level one certification from Training For Warriors (TFW1). In addition to coaching, I am also a behavior technician working with children diagnosed with ASD.
My hobbies and interests include dogs, urban farming, photography and obstacle course racing. “

Contact Now To Get Started

There is a gym on every corner in Southern California. There’s also at least one K-Mart or Walmart in every city in Southern California. But, would you be willing to go to a K-Mart / Walmart level facility for your health care? Probably not, so why would you trust your fitness, health and overall well being to a K-Mart level gym? K-Mart and Walmart are great for quick shopping and items that can be replaced often. The things at K-Mart or Walmart are inexpensive so we don’t expect the highest of quality. However when you need a wedding gift for your best friend or your boss you’re probably going to go to a higher end store. You can still save money at a higher store, but you definitely want a quality item. Right?

Your health and fitness shouldn’t be negotiable! You only get to live in one body so why screw it up?! Pick the gym with the world’s best fitness coaches and group fitness instructors. That’s Mo-Mentum Fitness! Our coaches and instructors are passionate about their careers. They constantly update their educations, learning new ways to help our members feel better, get stronger, recover from injuries, prevent injuries, burn fat, build muscle and increase the quality of their lives. Our trainers hold credentials from the most stringent nationally recognized fitness certification agencies such as NASM, ACE, and NSCA. Many of our trainers have Master’s and Bachelor’s degrees in Kinesiology and other science and health fields.

You can be confident that we will take care of you and help you reach your fitness, health, weight loss, strength goals and way beyond!