Our Staff

Julia Karlstad, M.Ed., NSCA-CSCS, ISSA-SFN

Founder & President, JKFITNESS, LLC

San Antonio Location

I’m Julia Karlstad and I am the President and Founder of JKFITNESS, LLC. I have worked in the fitness industry and specifically the medical wellness community for several years. I hold over fourteen years of experience developing, implementing and directing exercise, education and training programs within medical based programs and facilities. I am extremely passionate about helping people change their lives through fitness. My business, JKFITNESS, LLC, is a specialized personal training and wellness studio. We perform metabolic assessments, provide nutritional programs, outline individualized exercise prescriptions, and lead individualized and small group personal training sessions…all while focusing on a long-term lifestyle approach to complete wellness. I have a Master of Education in Exercise Science as well as a Bachelor of Science in Basic Sciences from the United States Air Force Academy (USAFA). I have authored two books about exercise as it relates to weight loss, “Rx Fitness for Weight Loss: The Medically Sound Solution to Get Fit and Save Your Life” and “Bariatric Fitness for Your New Life”. Additionally, I’ve been published in numerous periodicals and was featured with one of my clients on TLC’s “My 600 Pound Life” reality show. In 2013, I was voted Reader’s Choice “Best Personal Trainer” and in 2012 I was the “Featured Personal Trainer” on the cover of San Antonio Express’ Trends Magazine. I have a knack for motivating and excel in speaking platforms. I’ve been a guest speaker for several events and organizations to include: American College of Surgeons Annual Convention, Texas Association of Bariatric Surgeons Weight Loss Summit, Obesity Help Conference, Obesity Action Coalition’s Your Weight Matters National Annual Convention, Baptist Vascular Update Conference, the American Diabetes Expo, Methodist Health for Life Support Group, the Neurology Institute of San Antonio, the American Cancer Society and the Northern Arizona University Athletic Department. Before owning my own business, I personally developed and directed an exercise physiology program that consisted of two bariatric hospitals and three medically supervised weight loss clinics. I also spent ten years active duty in the United States Air Force and was an intercollegiate NCAA Division I athlete for the women’s basketball team at USAFA. I hold three nationally recognized fitness certifications and constantly pursue venues to further my formal education. I’m CPR/AED certified and I’m an active member of the American College of Sports Medicine, the National Strength and Conditioning Association, the American Diabetic Association and the Obesity Action Coalition.

Javier Villagomez, Certified Personal Trainer

Fitness Director

San Antonio Location

Hi, I’m Javier Villagomez. I have been enthusiastic about fitness and performance since high school. Basketball was my passion, but there was unfortunately no focus on sport-performance at my school. This motivated me to find ways of improving my performance, ultimately leading me to pursuing a career in fitness and health. I have over 10 years of experience in the fitness industry. I hold a Bachelor of Science in Kinesiology and Health from the University of Texas at Austin, with a specialization in strength and conditioning coaching. In addition, I am a Certified Personal Trainer through the American Council on Exercise. While in college, I had the opportunity to work with the UT Men’s Basketball team as an assistant strength and conditioning coach. I hold over 5 years of experience managing fitness facilities, as well as creating, implementing and directing fitness programs. My time in the industry has provided me the opportunity to coach a wide variety of small and large group fitness classes. I’ve also created summer programs for young athletes to enhance their sport-performance and weight-training. My overall goal is to motivate and improve the health and fitness of as many people as I can while educating them along the way.

Annalaura Gary


San Antonio Location

My name is Annalaura Gary I’ve been passionate about nutrition for almost 20 years. I began my nutritional training working with primates at Southwest Research.  This passion continued throughout the years with the drive to learn more.  I love educating individuals on the importance of nutrition through a lifetime.  My passion is nutrition for the whole family. I graduated with my Bachelor’s of Science in Biology from Schreiner University in 2008. In 2010, I received my Health Coach certification and continued on to complete my Master’s of Science in Applied Clinical Nutrition in 2020.  While in school both my daughter and I received Celiac diagnoses which brought the importance and dangers of certain foods home.  I love working with individuals to find the solution to their alignments through food and watching them thrive.

Leonardo Gonzalez, ISSA Certified Personal Trainer

Health & Fitness Professional

San Antonio Location

Hello, I’m Leonardo Gonzalez. My passion for health and fitness started in high school where I played football and trained in the strength and conditioning programs. Through college, I trained with powerlifting style programs and currently train for and compete in strongman events. I have a Bachelor of Science in Kinesiology from the University of the Incarnate Word. I am an ISSA Certified Personal Trainer as well as an ISSA Specialist in Strength and Conditioning. I have experience working with and educating various age groups such as coaching youth football, assisting in strength and conditioning programs for high school athletes, and have taught conditioning classes for industrial athletes in a manufacturing setting. I also have experience as a PT technician in a Physical Therapy clinic. I enjoy working with and motivating people to help them achieve their goals.

Bianca Gonzales

Administrative Assistant

San Antonio Location

I’m currently a full-time student at UTSA, majoring in Art History and Criticism. My interest in fitness and health started in high school with the dance team, yoga and running. Now, I enjoy cycling and hiking. I am excited to watch people achieve their goals and full potential here at JKFITNESS!

Nicole Coppi

Yoga & Pilates Instructor

San Antonio Location

Nicole Coppi is an E-RYT-200 hatha yoga and kundalini yoga teacher. She practices and teaches iRest Yoga Nidra, a guided resting meditation, colloquially referred to as “sleep yoga”. She is a volunteer for Project Welcome Home Troops where she is qualified to teach breathing techniques to Veterans to assist in reducing stress response, increase energy, focus and vitality, and improve quality of sleep. Nicole is also a Peak Pilates Level 2 teacher.

Bailey Akins ISSA Certified Personal Trainer

Health & Fitness Professional

San Antonio Location

Hi, my name is Bailey Akins and I have been apart of the fitness world for as long as I can remember. Growing up playing sports, I have always been passionate about finding ways to grow and become the best version of myself. As I got older I focused in on softball where I played in both high school and college. From there, I got the opportunity to coach college softball at the Division 2 level for a year before the pandemic hit. 

I am CPR/AED certified and an ISSA certified personal trainer. Along with this, I have experience as a kickboxing instructor and semi-private training.  I am passionate about being in this industry because having the ability to help others change their lives for the better is so fulfilling and rewarding. I believe that you are never too experienced to continue learning. I strive to grow my education to better myself and in return better the people I interact with. 

JKFITNESS offers personal training, nutrition programming, yoga, small group training, open gym access, and MORE.Call NOW to change your life!