Matt Costa.png

Sam Ditzell - Owner

Sam Ditzell - Owner

512.585.5390 |

Sam is President and owner of Austin Fitness Clinic.  He has a Bachelor’s degree in Exercise Physiology from the University of Texas at Austin, and is certified through the American College of Sports Medicine.  

Sam specializes in working with clients who have chronic pain as a result of postural imbalances and an inactive lifestyle as well as postpartum conditions including diastasis recti and incontinence.  By correcting strength/flexibility imbalances and returning a client to healthy movement, Sam’s goal is to keep his clients from requiring surgical intervention to treat their pain.  Many clients also see Sam post-surgery to speed their recovery and prevent further treatment with surgery and drugs.


Marci Ditzell-owner

Marci Ditzell-owner

512.585.1742 |


Marci is Vice President and Owner of Austin Fitness Clinic.  She has a BS in Interdisciplinary Studies: Fitness and Nutrition from Texas State University, and holds a CPT certification through the American College of Sports Medicine.  

Marci works with a wide variety of clients helping them develop a life-long fitness and nutrition plan.  She specializes in working with clients who have chronic pain as a result of postural imbalances and an inactive lifestyle as well as postpartum conditions including diastasis recti and incontinence.  By correcting strength & flexibility imbalances and returning a client to healthy movement, Marci's goal is to keep her clients from requiring surgical intervention to treat their pain.  Many clients also see Marci post-surgery to speed their recovery and prevent further treatment with surgery and drugs.

She also works with a wide variety of general fitness clients helping them lead healthy, active, pain-free lives.  Marci helps clients train for various recreational sports as well as provides support on nutrition and lifestyle changes to achieve wellness.


Jake Norman

Jake Norman

512-689-5069 | |

With a BS in Kinesiology from The University of Texas, Jake Norman is a certified fitness specialist, licensed massage therapist, and active release techniques (ART) provider.  ART is a state of the art soft tissue therapy that precisely evaluates and treats injuries.  With over 500 treatment protocols, art treats muscles, ligaments, tendons, fascia, and nerves.

Jake started his career in the health industry as a trainer that specialized in functional performance and rehabilitation. Before becoming an art provider, jake became a licensed massage therapist through the Lauterstein-Conway school of massage.


Laura Warren

Laura Warren

469.463.4108 | |

"Create the BEST version of yourself!"

As a master personal trainer for ten years, having trained thousands of sessions, ranging from grade-school students to current Olympians, Laura specializes in working with the following wide spectrum of client goals:

  • Prenatal/ post pregnancy
  • Injury/ post-surgery rehabilitation
  • Weight loss
  • Sports performance
  • Group training
  • Strength and conditioning consulting
  • Nutrition counseling
  • Swimming instruction

Laura has a proven track record of attaining and surpassing clients' desired results through prescriptive program design that establishes appropriate resistance training, cardio, flexibility, and nutritional plans for application and reinforcement of lifestyle adaptation.  


  • B.S. in Kinesiology, minor- Childhood Studies (University of Texas at Austin)
  • National Academy of Sports Medicine- Certified Personal Trainer
  • National Academy of Sports Medicine- Corrective Exercise Specialist
  • TRX Suspension Training Instructor
  • bodybugg Calorie Management System
  • Texas All-Level (K-12) Physical Education
  • Certified Strength and Conditioning Specialist '02 (Univ. of Texas- swimming, rowing, softball)

Laura's extensive background in personal training, athletics, teaching, and coaching gives her valuable insight into the physiology and biomechanics of the human body.  A former Division I swimmer at TCU and rower at UT, Laura has competed at an elite level.  Most recently, on the world stage, Laura has earned the title of 3-time Masters Swimming World Champion, in the 50-meter breaststroke (2) and 50-meter freestyle (1).  As an avid participant in swimming, Olympic weightlifting, tennis, softball, sand volleyball, water/snow skiing, archery, hiking, rafting, and kayaking, Laura understands the need for a strong, healthy body to enjoy an active lifestyle for decades to come. 

Matt Costa.png

Matt Costa

Matt Costa | | 512.703.0115

If mindfulness is the price of freedom then physical exertion is the price of independence; don't use it, you lose it. The idea of keeping the body fit is integral to a healthy life and Matt trains his clients to find their "go anywhere, do anything" bodies.

Matt spent four years in the U.S. Marine Corps which gave him a respect for the effectiveness of high intensity interval training. This was rounded out by the preventative and rehabilitative methods that a great certification and mentorship give. Integrating the two has become Matt's training style in the best environment for it; Austin Fitness Clinic.

Areas of specialization:

  • General Fitness
  • Post Rehab
  • Preventative Maintenance
  • Corrective Exercise
  • Strength Training
  • Weight Loss
  • Weight Gain
  • Functional Fitness


  • American College of Sports Medicine - Certified Personal Trainer

Michael Siler

Michael Siler

505.603.2302 |

The number of options available for one to improve their quality of life through fitness may, at times, seem overwhelming. This should be seen as an advantage rather than a problem when it comes to setting up an individualized exercise plan. With all that’s available, exercise can and should be seen as a “reward” as opposed to the “routine” it might have originally been thought of as. With your cooperation, it will be michael’s number one priority to help you achieve your goals and reach new levels you never thought possible.

Michael is willing to work with anyone wanting to improve their quality of life including those interested in:

  • weight loss/weight gain
  • sport specific
  • general fitness
  • functional strength
  • corrective exercise
  • post injury rehabilitation
  • injury prevention

Professional Qualifications:

  • B.S. in Kinesiology: Health Promotion and Fitness
  • A.C.E. Certified Personal Trainer

Sharon Geller-Kruger

Sharon Geller-Kruger

512.431.1115 |

With close to a decade of experience as a Certified Personal Trainer, Sharon brings enthusiasm, energy, and expertise to every interaction with every client. She understands the unique needs of busy parents, business professionals, and high school/college students who are committed to making fitness a priority. Her personal training philosophy is that what you do inside the gym should enhance your life outside the gym. She believes in a whole-body, balanced approach to life.

Certified by the Cooper Clinic in Dallas, Sharon specializes in goal-setting for maximum health and transformation, weight loss, nutrition, functional core training, and focused preparation for specific activities, including marathons, triathlons, and other intensive physical challenges. An avid runner, cyclist and hiker, she also practices what she preaches.

When not guiding clients to their personal-fitness best, Sharon stays busy as the mom of three children.



Sondra Lieder

Sondra Lieder

512.750.9471 |

Sondra has been involved in the personal training and fitness industry since her days in high school. Originally from New England, she graduated from the University of New Hampshire with a BS in Exercise Physiology and a BS in Psychology.  At UNH she competed on the cross country, track and field, and cycling teams.  Clinically, Sondra was involved with the Cardiac Rehabilitation program for patients recovering or prone to cardiovascular disease.  She was also an Exercise Physiologist for the Employee Fitness Program.  After graduation, she interned at the USA Triathlon National Training Center in Clermont, Florida where she worked with the 2004 Triathlon Olympic tea that competed in Athens. Following her internship she studied at the University of Texas at Austin in the graduate program for Exercise and Physiology and Sport Science and Nutrition.


Sondra is an expert personal trainer, competitive distance runner and former top-amateur triathlete. She has run numerous races including the Boston, NYC, and Chicago Marathons.  Her triathlon career included the sprint and ironman distances...and everything in between!  She currently trains for fun and incorporates running, biking, yoga, and strength training.  Sondra has trained many clients for their first 5K and others for marathons and triathlons.



Certified Strength and Conditioning Specialist, National Strength and Conditioning Association

Certified Personal Trainer, National Academy of Sports Medicine

B.S. Kinesiology: Exercise Physiology, University of New Hampshire

B.S. Psychology, University of New Hampshire



Personal Training

Home Fitness Training

General Fitness

Fat Loss, Lean Muscle Gain

Marathon and Triathlon Training, competitive and recreational

Special Populations [pre/post natal, injury and cardiac rehabilitation, high school, men and women over 50]

Injury Prevention


Yvette Sepulveda

Yvette Sepulveda

325.242.3783 |

Yvette is a combat veteran who proudly serves her country as a member of the Texas Army National Guard. She has a Bachelor’s degree in Health Promotion with a specialization in Health Fitness Instruction from the University of Texas at Austin. She currently holds a personal training certification through the American Council on Exercise.

Yvette specializes in functional training methods that focus on correcting postural, strength and flexibility imbalances.  From chronic pain, post-rehab, and injury prevention to weight loss, Yvette’s main focus is not only to improve her clients’ fitness level but to also improve their quality of life in the process.

Areas of Specialization:
- Injury prevention
- Post-rehabilitation
- Wight loss
- General Fitness
- Strength Training
- Resistance Training
- Post-menopausal (osteopenia and osteoporosis prevention)  

Name *