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Raul Caldera

Raul Caldera


Personal Training

Raul is an NASM Certified Personal Trainer and holds a Precision Nutrition Level 1 Certification. He is a passionate and enthusiastic Trainer who thrives to see clients take on new challenges and succeed. His passion lies in helping others be the best version of themselves and help them grow in their health and fitness journey.

Josh Mosley


Grambling State University

NCCProfessional PT personal trainer

Sports training, speed and explosive training, strength training, bodybuilding, powerlifting, Nutrition, Hunting, movies


  • 8+ years Sport Specific Training, speed and explosive training, film study
  • Former Division IAA Football player
  • 7 yrs Semi Professional football player (GDFL, MPFL)
  • 3 yrs Arena football player
  • 5+ championships
  • 3 years youth select football coach
  • 2 years Denton High School Girls athletic Strength and conditioning coach
  • 10+ trained professional athletes
  • 15+ athletes receiving full scholarships

Crystal Hill


PIYO, Turbo Kick Boxing, Group Fitness, Personal Training

9 years

Growing up with a family history of heart disease and obesity, my passion for wanting to change that trend started at an early age. I have been certified/teaching health and fitness for 9 years. I specialize in mobility training, weight loss and functional training. I enjoy working with children and adults over the age of 55 although, I am extremely happy to help ANYONE achieve their healthiest and happiest life.

I am married and have two boys (18 and 9). I am the oldest of three girls and extremely close to my sisters and my mom. I graduated from Grand Prairie High school in 1993 and have lived in East Texas since 1994. I enjoy wakeboarding, cooking, being at the lake or the ocean, sewing, spending time with my boys, my chickens and my German Shepherd “Ernie”. I am an animal advocate, a Momma Bear, and health enthusiast!

Sherri Herring

Sherri is an AFAA Certified Personal Trainer and Group Fitness Instructor. She teaches a wide range of classes. Sherri is an extremely motivating and enthusiastic Trainer who is full of energy and thrives to see clients take on new challenges and succeed. Her love of fitness is evident through her sincere and genuine personality.

Kelli Chamberlain

Kelli brings over 25 years of experience as a Fitness Professional to the Fitness 1440 team. She previously served as a Fitness Director for 16 years where she managed the Group Fitness and Personal Training programs for a local, family focused Fitness Center. Prior to that, Kelli worked as a Cardiopulmonary Rehabilitation Specialist for three major hospitals. She discovered her passion for teaching group fitness classes in 1994 and teaches a wide variety of classes including: Step Aerobics, Floor Aerobics, Cycle, Yoga, SilverSneakers®, Water Aerobics, Circuit Training and Strength/Conditioning.

Kelli holds a Bachelor of Science Degree in Kinesiology from U.T. Tyler as well as numerous certifications including: AFAA Group Fitness Instructor, SilverSneakers® , Yogafit® and Schwinn®.

Working with members and staff over the past 25 years has brought her immense joy. “It’s not just about working out; it’s about building relationships and changing lives.”

Marie Shelton

Marie holds a Bachelor of Science Degree in Kinesiology from East Texas Baptist University and has served as a public educator for over 25 years. She is an AFAA Certified Personal Trainer and Group Fitness Instructor. Marie greatly enjoys educating others and teaching them the importance of health and fitness. She is very results driven which is reflected in her efficient, creative and thorough training style.

Cherie Sacco

Cherie, a seasoned fitness enthusiast, holds certifications as a SilverSneakers and Schwinn Cycling Instructor, with over 15 years of dedicated experience in leading group fitness classes. Fueled by her transformative personal fitness journey, she passionately imparts her knowledge to individuals of all ages and diverse backgrounds. Specializing in Senior Fitness, Cherie extends genuine care to every participant, infusing her classes with boundless joy and motivation.

Amy Brown

Amy is an AFAA and SilverSneakers Certified Group Fitness Instructor. Amy has been teaching fitness classes since 2008. She teaches a wide range of classes- including yoga, cycle, strength training and aerobics. Amy believes being active is an integral part of physical and mental health. She enjoys helping people find joy and community in fitness.

Traci Bond

Traci is an ISSA Certified Personal Trainer and holds certifications in group fitness training as well. She has been dedicated to teaching classes for over six years in the Longview area. Traci specializes in strength and conditioning training and uses her knowledge in that field to give every client she trains the best results so they are able to achieve the goals they have set for themselves.

Shalon Buck

Shalon is an AFAA and DNAFit Certified Personal Trainer. She is also an AFAA, Schwinn® and SilverSneakers® Certified Group Fitness Instructor with over 15 years of experience. Shalon teaches a variety of Group Fitness classes at Fitness 1440. She has a unique ability to provide a fun, yet intense workout in every Group Fitness class and Personal Training session. Shalon’s contagious energy and positive attitude are two of her key attributes which inspire others to reach their utmost potential in health and fitness.

Shawna Westervelt

Shawna is an AFAA Certified Group Fitness Instructor who has been teaching group fitness in Longview for 10 years. She is also certified in SilverSneakers® and began her group fitness career with the Fit for Life crew when they met at Senior Circle. She is no stranger to fitness and is an athlete at heart, having played sports since she was a little girl. In addition to teaching, she enjoys strong lifting and challenging herself every day.

Matt Mitchell

Matt is an AMFPT Certified Personal Trainer. Matt played four years of University soccer and has been acquainted with personal fitness for 25 years. He enjoys helping others get the maximum benefit from limited training time. With Matt’s experience in sports, he is qualified to pass along to athletes his understanding of strength training to increase their performance.

Focused On You

We are focused on delivering personalized and innovative training programs to each of our clients. Our trainers, staff, and instructors are always available to help you achieve your fitness goals and improve your overall health.

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