Premier Fight and Fitness proudly serving Spring Valley since 2017
Premier Fight and Fitness has Classes in Spring Valley, Perfect for Kids, Teens, and Adults Muay Thai Lessons.
Who we Are And why You Should Train Here
At our muay thai gym, we are passionate about helping individuals transform their lives through our various programs. We understand that each person has their own unique goals and challenges, which is why we offer personalized coaching and support to every student.
Our safe and welcoming environment is designed to help students of all ages and experience levels feel comfortable and confident in their muay thai journey. Whether you’re a beginner or an advanced practitioner, we believe that there is always room for growth and improvement.
Through our programs, students not only learn important self-defense skills, but also develop mental toughness, discipline, and a strong work ethic. We believe that these qualities are essential for success in all aspects of life, and we are committed to helping our students achieve their full potential.
Join our community of dedicated martial artists today and discover how we can help you achieve your personal goals and live your best life.
Get To Know Our World Class Instructors
Jeremy Shepard
Owner | Head Coach
Coach Jeremy brings a fundamentals first coaching style built on real experience, structure, and long term development. His sessions are technical, detail focused, and rooted in strong basics like movement, balance, and smart decision making. He believes progress comes from repetition, discipline, and truly understanding what you are learning. Whether a student is training for competition or personal growth, his goal is to help every athlete improve with confidence while also making sure training stays fun, motivating, and enjoyable.
He specializes in working with youth and beginners and has over 10 years of experience coaching students from as young as 3 years old to as old as 70. From getting in shape and building real confidence to learning how to strike and preparing for competition, Coach Jeremy has helped students at every level succeed. As Head Coach, he leads the gym’s fight team and oversees both adult and youth programs, guiding athletes to National, International, and World Muay Thai titles.
Originally from Hawaii, Coach Jeremy began training in Muay Thai, MMA, and Jiu Jitsu at the age of 13 after spending nearly a decade playing soccer. After graduating high school, he moved to San Diego to pursue his career alongside his brother Zac. While his early goal was MMA, he quickly found his true passion in Muay Thai and Kickboxing, which became his main focus.
With 17 years in combat sports, 17 fights, and an amateur Muay Thai championship, Coach Jeremy brings real world experience, discipline, and structure into every session. He has also been selected four times as an assistant coach for WBC Muay Thai Team USA and once for USA Muay Thai, helping lead athletes on the international stage. Above all, he is committed to giving back through coaching and believes that building a strong, supportive gym community is just as important as the training itself.
- 17 yrs of Muay Thai experience
- 10 yrs of Coaching experience
- Amateur Muay Thai Champion
- 17 Fights – Muay Thai/Kickboxing
- Multiple National, International, and World titles won as a Head Coach
- 9 World Championships won as a Head Coach
- 5x TEAM USA assistant Coach (4 WBC / 1 IFMA)
Selina Flores
Owner | Coach
Selina Flores is a two-time WBC Super Bantamweight World Champion and one of the top professional Muay Thai fighters in the world today. With over 40 fights and a professional record of 9-1, she holds multiple world titles, including the WBC World Tournament Gold Medal and the WCK Bantamweight and Super Bantamweight World Titles. In 2024, she became only the third American woman in history to win the WBC Muay Thai World Title and successfully defended it in 2025.
Selina began training at 15 when her parents signed her up for a local gym for self-defense. Though she initially hated it, she quickly fell in love with Muay Thai and had her first fight just a year later. As an amateur, she earned 11 national titles across weight classes from 108–135 lbs and represented Team USA at the IFMA Pan American Games and World Championships, earning three silver medals. Her standout performances-including two headkick knockouts in Bangkok- led to her signing with Glory Kickboxing in 2019, where she made her professional debut in Shenzhen, China.
As a coach, Selina is known for her fundamentals-first approach, shaped by the same practical techniques that helped her succeed at the highest level. She focuses on helping students build a strong foundation to grow from- whether they want to compete, or simply have fun training and learning. Selina runs the women’s kickboxing program and also teaches co-ed and youth classes. Creating a welcoming, inclusive space, especially for women, is central to her mission, and she’s passionate about building a gym culture where everyone feels safe, supported, and challenged to grow.
- ONE Championship Athlete
- 10 yrs of Muay Thai experience
- 7 yrs of Coaching experience
- 40 Fights – Muay Thai/Kickboxing
- 2x WBC Muay Thai World Champion (professional)
- 1 of only 3 American Women to win a WBC Muay Thai World Title.
- 3x WCK World Champion (pro)
- Lion Fight North American Champion (pro)
- 2x WBC World Games Gold Medalist
- 3x IFMA World Silver Medalist
- 11x Amateur Muay Thai Champion