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Meet our Youth Fitness Trainers

Passion and commitment are number-one-characteristics of Energetic Juniors youth fitness trainers. EJ trainers are highly educated and will help your kids get the most out of each session. Many of our youth fitness trainers have been with us for years and specialize in working with children. You will find only the most passionate, friendly, and experienced trainers in our sessions. They will motivate your child to have fun and get results.

  • Passion for fitness
  • Love working with children and teens
  • Youth Fitness certification or education
  • Responsive to needs and interests
  • Great energy and encouraging spirit
  • Dedicated to your child’s success
  • Creative and innovative approach to fitness
  • Diverse backgrounds and specialties

Mario G.


My name is Mario Guerrero, and I’m originally from Guayaquil, Ecuador. I have been living in New York for the past 9 years.

I have earned my bachelors of science in kinesiology and movement science, and I have also become a Youth Fitness Specialist Level 1.

I started working with children as a teenager, and have been part of summer camps in New York that worked with children from 10 to 14 years of age. I have also done volunteer work in little league teams from churches in Brooklyn and Queens.

My latest non-profit work was in Harlem in an after school program that worked with middle school kids (6-7- and 8th grade)

I have also done personal training for adults at different companies since I was 19, and I’m still heavily involved with this type of work.

My work with Energetic Juniors has helped me evolve as a youth trainer and it has provided me with a vast amount of experience that will help me advance. I’m looking forward to continuing my education and growth as a professional with Energetic Juniors.

Katrina P.


Virtual Training Only

Katrina Phillip is a native of Chicago. Being the hyperactive child that she was, her folks enrolled her into dance class, and she was hooked ever since.

Katrina went to Western Michigan University to get her B.F.A. in Dance, meanwhile she discovered a new love for fitness training and instructing. There in Kalamazoo, MI, if she wasn’t rehearsing for a show, in class or studying, Katrina was found teaching and training at WMU’s state of the art rec center.

Now, Ms. Phillip continues to pursue both passions here in NYC. She is certified through AFAA, NETA, and IFTA for personal fitness training and for group exercise instruction — Has had her ZUMBA license since 2010 and her MaddDoggSpin certification since 2012. Katrina has even taught P.E. for private schools and for special needs programs all over the city. Recently she has become a P.E. adjunct professor for Columbia and Barnard Universities. Her clients and students range from age 3 to 91 years old.

“Sharing my passion & joy for movement, celebrating our health and physical abilities, is just the best job I could ever ask for. My philosophy working with children and adults is to have them enjoy and embrace the physical fitness challenges given… To celebrate their strength and be proud of what they can do and accomplish!”

Katrina has been with Energetic Juniors since 2004.

Colleen K.


While attending school for business at Fordham University and working in advertising for a sports television network, exercise was always Colleen’s outlet. Colleen found that setting goals and achieving them inside the gym translated to her life outside of it. After three years of working in a corporate environment, Colleen decided to leave her job to pursue a career within the fitness industry. Colleen spent three years working in management for a small boutique fitness studio, and while there, she obtained her personal training certification through NASM. She thoroughly enjoys helping her clients set and accomplish their fitness goals.

Colleen has always had a passion for working with children. As a teenager, she began working as a camp counselor and continued to work with children by babysitting for multiple families in Manhattan. Colleen enjoys combining two of her passions, fitness and children, as a trainer at Energetic Juniors! She believes that fitness is not only a great tool in creating physical changes, but also (and more importantly) it is a tool towards improved confidence, self-esteem, and outlook.

Colleen has earned her Youth Exercise Specialist certification through NASM. She can’t wait to help her youth clients reap the positive benefits of fitness!

Meredith T.


When it comes to working with children and teens, Meredith believes in fostering a positive, safe environment in which the kids can build their self confidence, reach their goals, and most importantly, have fun. She recognizes that kids, just like adults, are all beautifully unique and finds it crucial to personally tailor each and every workout to match the vivid, individual spunk of the client. She finds children and teens to be inspiring, and is passionate about helping them to discover their full potential. Meredith has had several years of experience developing and teaching dance, fitness, yoga, and gym classes to kids of all ages. She is an ACE certified personal trainer and graduate of the dance theater program at The American Musical and Dramatic Academy. In addition, she has education and experience in multiple dance styles, yoga for kids, CardioTap NYC, HIIT, and dance cardio.

Meredith is a Youth Fitness Certified trainer.

Paytra G.


Paytra brings a unique and young energy to exercise and health. She has been two-times certified by the International Sports and Science Association. Her passion for fitness and continuing education on new ideas/workouts makes for a challenging and ever-changing workout program.

Her philosophy working with kids is that exercise should be an enjoyable experience that caters to the needs, goals, and desires of each child. She loves to instill confidence and a life-changing attitude about the healthy lifestyle.

Paytra is also a professional singer/musician, and she uses her musicality to foster the creative side of the kids. She’s adventurous, passionate, and full of joy; and she feels honored to be able to share her love for health with clients of any age.

John V.


I believe the best time to start practicing fitness and health was yesterday. The second best time is today.

No matter what age – young or old – I enjoy helping enrich and change lives through training. Since being diagnosed with Type 1 Diabetes as a teen, I decided to take action about how I wanted the rest of my life to be – long, healthy and joyful. I took up training and quickly realized my calling was not just to train myself, but others as well. From being a summer camp counselor in my high school years to formally training teens now, I have always enjoyed working with kids and young adults. It is never too early to learn good movement “habits,” and stay ahead of the curve with sports performance and strength.

I am currently certified by NASM and am pursuing a Doctorate of Physical Therapy. I emphasize correct, efficient movement that transfers over to sports, daily life, and addresses stability and strength. I am well versed in many modalities and enjoy being creative with whatever equipment is available. Most of all, I enjoy making workouts fun, challenging and engaging!

Jerome P.


Jerome has a Bachelor of Science in Sports Science. He was a former High School PE teacher, then moved to the Fitness Industry for the past 12 years. He started as a fitness coach and then became a Fitness Manager, leading a team of Personal Trainers. He was also an Internship Supervisor which educated college student about fitness and exercise. In college, one of his thesis papers was about Talent Identification, which helps identify for kids/
teens as to what sports they can excel in. He always loved sports. He played basketball for his High School team for 2 years which helped give him the drive to pursue fitness as a career. Jerome believes in the quote “Mens Sana In Corpore Sano” which is a Latin term for “A Healthy Mind in A Healthy Body”. He is very passionate in helping people — especially kids — achieve their fitness goals and to educate them about the importance of exercise.

Eric C.


Eric Crumwell is a native New Yorker. He graduated from the University at Buffalo with a degree in industrial engineering. Eric’s primary inspiration for fitness sprouted since his childhood years of practicing martial arts and boxing. This grew into playing all sports and eventually building his passion in becoming a Division 1 athlete. He considers that fitness is a life long journey, hence his passion to help children begin and stay on their fitness journey. He believes that fitness is just as much mental as it is physical. Eric has used this philosophy when working with clients. He has volunteered with children from ages of 6-18, teaching them football fundamentals. Eric has over 10 years experience as a certified trainer. His certifications are NASM cpt, TRX suspension trainer, TRX rip trainer, Kettle Bell, Functional Movement Screening, Stretch, Boxing and Kickboxing, Pilates, and Corrective Exercise.

Jane B.


Jane Bernhard is an ACE Certified Personal Trainer. Growing up as a nationally ranked soccer player, Jane has always had a passion for fitness and sports. She has a BFA in musical theater from Boston Conservatory and loves inspiring kids with music, creativity, and movement. Growing up with trainers herself, she knows the positive impact a trainer can have on a child. She brings her bubbly and warm energy to a motivating and safe workout and is passionate about helping kids boost their self-esteem, get strong, and have fun. In addition, Jane has taught weight-lifting, aqua-cycling, water aerobics, paddle board yoga, yoga, P90X, and sports specific skills.
Jane is a Youth Fitness Certified Trainer

Cassandra G.


Virtual Training Only

Cassandra “Cat” German has been working in the fitness industry for 12 years. She is a Certified Personal Trainer, Group Fitness Instructor, First Degree Black Belt Belt (Jujitsu & Chin Na), & Certified Female Self Defense & Rape Prevention Instructor.

She has trained a wide variety of clients ranging from youth (ages 5-19) to seniors in both personal training and self-defense. By helping her clients improve their strength, endurance, balance, flexibility, and learn life saving self defense tactic’s, etc. she is satisfied knowing she has helped make a positive change in someone else’s life.

Her experience working with children has helped her in every aspect of her career in fitness. She feels it is part of her life calling to help teach children how fitness and living and an active/healthy lifestyle can not only help them with their school studies but also help them become a valuable member of their community.

Believe it or not, Cat picked up her first dumbbell at the tender age of two years old and never put it down. Being an athlete her whole life, playing many sports such as softball, soccer, track, martial arts, bodybuilding, and basketball, Cat’s athletic potential never went unrecognized.

In 2007 she decided to challenge herself to get into the best shape of her life and entered into her first natural figure & bodybuilding competition with the INBF- International Natural Body Building & Fitness and placed 2nd. Shortly after that, she decided it was time for her to face her destiny and pursue a career in the fitness industry.

John S.


John Snow is a boxing trainer/personal development coach with over 20 years experience. Born and raised in Brooklyn, John’s life changed when he gathered the courage to climb the stairs of the famed Gramercy Gym near Union Square. It was there that he began the never-ending journey called boxing. Through the various stages and challenges of life, he realized that the one thing that helped frame his success was what he learned about himself while boxing.

Unfortunately, most people boxing today miss the most important component of the sport—that is ,the mental training required to win and the relationship between fighter and trainer. It is this training that is so valuable to children and teens. Regardless of their athletic ability, boxing, when taught properly, will develop a strong sense of self confidence, discipline, and self reliance that children will be able to utilize both in school and everyday life.

John is a graduate of Fordham University as well as a CPT with the National Academy of Sports Medicine. He is most proud of his role as a father to his 13 year-old son.

Dee C.


With 20 years experience in strength movement and vitality, Dee believes transforms exercise into playtime for kids and teens. She believes that openness and joy is what makes kids blossom and allows their natural intelligence and power to shine.

Dee has certifications, education and experience in Pilates, Personal Training, Martial Arts, Biomechanics , Physiology and Neuro-anatomy. Dee also has experience with holistic and eastern philosophies, which she often integrates into her training.

Dee has been with Energetic Juniors for 15 years.