Trainer Bios

• Chasen Booher
• RJ Haas
• Marzena Hajduk
• Mike Relucio

• Rebecca Tennant
• Kris McMillian
• Karin Carrillo
• Sergio Borges
• Alisha Matthews

Chasen Booher
Certified Personal Trainer (1997)

Other Certifications:

• American Council on Exercise (ACE) Clinical Exercise Specialist
• AFAA Advanced Personal Trainer certification
• Apex. Nutrition Coach

Bachelors of Science in Exercise and Sport Science from the University of Arizona

Chasen worked at the Sports Medicine Rehabilitation Center at Sharp Memorial Hospital, where he gained valuable physical therapy experience through working with clients with injuries. Chasen takes pride in motivating all of his clients towards attainable fitness goals.

He works under the philosophy that every body is unique and requires a tailored fitness plan and specific tools to reach the individual’s goal. Chasen has been a High School coach and has trained athletes to excel in their sport. He is currently a certified Emergency Medical Technician (EMT) in the State of California.

Rebecca Tennant
Certified Personal Trainer

Personal Trainer & Group Exercise Instructor Certification (2005/2001)

Other Certifications:

• Aerobics & Fitness Association of America (AFAA)
• Yoga certified including senior and pre & post-natal

Rebecca has been involved in fitness activities from a young age. She has studied dance (modern, jazz, tap, and ballet), Pilates, yoga, karate (Tang Soo do) and stage combat. She is currently pursuing her degree in Kinesiology and also has a degree in theater performance.

She enjoys helping people reach their fitness goals. As teaching is her passion, she will give you the tools to successfully train on your own as well. She is also available for private yoga or Pilates classes.

Outside of the gym, Rebecca performs and teaches for the National Comedy Theater and Improvisation Theater Company.

RJ Haas
Certified Personal Trainer

Certified Personal Trainer since 2005

Other Certifications:

• Aerobics & Fitness Association of America (AFAA) Personal Trainer

Continuing education in Kinesiology, Emphasis in Physical Therapy

RJ coached high school athletics such as varsity volleyball and varsity rugby for men and women. He currently serves as the fitness coach for the UCSD Men's Rugby team. His interest in the field was sparked by his own knee injuries as a youth and the subsequent struggles with the rehabilitation process. While playing rugby, RJ experienced a major shoulder injury that required surgical repair. During that time, he became less active and gained weight.

After successful recovery, RJ became focused on getting back in shape and staying in shape. His training philosophy is guided by his personal experience and his desire to assist others with the objective of developing and maintaining a healthy approach to lifelong fitness.

Marzena Hajduk
Certified Personal Trainer

Certifications:

ASEP Leader Level Coach (1999)

Degree in Electro-Radiology

Associate of Apply Science in Sports & Fitness in Technology

Other Certifications:

• American Institute of Fitness Education (AIFE),
   2004 (Older Adult Fitness)

Marzena enjoys taking continuing education in specialized areas such as:Exercise and Fibromyalgia; Exercise and Arthritis, Exercise and Parkinson‘s Disease, Posture & Post-rehab for clients.

Marzena combines her knowledge of sports , exercise physiology, kinesiology and nutrition to motivate and guide clients to their fitness goals. Marzena has experienced excellent results working with people suffering from arthritis, fibromyalgia, and going through muscle and joint rehabilitation. Marzena will help you reach your goals, whether it is to make a dramatic physique change or if you are training for a specific event.

Mike Relucio
Certified Personal Trainer

Certified Personal Trainer since 1999

Other Certifications:

• Certified Strength & Conditioning Specialist (NSCA)
• American Council on Exercise (ACE) Certified Personal Trainer
• Certified Kickboxing Instructor
• Holistic Health Practitioner Massage Therapist

Mike has been involved in fitness nearly all his life. His first love was Martial Arts and he was a junior instructor of the San Diego WuShu Team in 1988.

He loves to help clients achieve their fitness goals. Michael also currently works at USMC Air Station Miramar as a Night Manager and Massage Therapist.

Kris McMillian
Certified Personal Trainer

Certified Personal Trainer and Group Exercise Instructor since 2007/2004

Other Certifications:

• Aerobics and Fitness Association of American (AFAA)
• National Academy of Sports Medicine (NASM) Foundations Completion
  

Kris has had a passion for fitness for most of her life. As a mother of five, she has a strong desire to help all ages achieve their fitness goals. Her clients have ranged from 8 to 88. Kris’s workouts range from highly energetic circuit training to gentle and effective stretching routines.

Kris has been teaching fitness and nutrition to adults and children since 2004, she believes fitness should be fun and uplifting and strives to create that experience for you. Kris is eager to set up an exercise program for you and help you attain the body you desire.

Karin Carrillo

• National Personal Training Institute (NPTI) Certified Personal Trainer
• Outdoor Boot Camp and Kettlebell Instructor
• Bachelor of Arts in Communication from SDSU
• Nutrition and Weight Loss Counselor
• Running Specialist and Distance Runner

Karin has helped dozens of people achieve happier and healthier lives. She uses positive motivation with proven, sustainable training techniques to help clients reach their health and fitness goals. She lives by her motto: work hard, laugh often and never stop learning.

Karin understands the weight-loss journey and has even been in an infomercial for her “before and after” photos. An experienced marathon runner and active in yoga, Muay Thai and Kettlebell workouts, Karin will give you results, while challenging you to try something new. 

Sergio Borges

• Level III USA Triathlon coach
• Level II USA Cycling coach
• Former head coach of the UCSD and current head coach of the UCI Triathlon Team
• Head Coach, USA Team (Elite, U23 and Junior) at the 2008, 2004 and 2003 Duathlon World Championships
• USAT Coach at Collegiate National Camps and Recruitment Camps
• USAT Lecturer at Coaching Level I and II Clinics
• Contributor to three sport magazines

He is an elite Ironman distance triathlete and has dedicated the last 15 years to studying the science of triathlon training. During this time, he has competed in hundreds of races of all distances including 20 Ironman races around the world (9:38 PR), over 50 half Ironman (4:12 PR), qualifying for the Hawaii Ironman World Championships seven times. USA Triathlon has nominated Sergio five times “All American”. After 10 years of investment banking, he decided to apply his expertise to personal triathlon coaching.

Sergio's history in triathlon has contributed to the emergence of many of today's top California based Pro and Age Group talents

Alisha Matthews
Certified Fitness Professional

• Master in Business Administration – Ashford University
• Bachelor of Arts in Social Work – San Diego State University
• NASM Personal Training Certification (NASM)
• Inspired Anusara Yoga Instructor  
• Group Fitness/Boot Camp Instructor Certification (ASFA)
• Silver Sneakers Certified (Elderly Training) 

         
Alisha performs an in depth intake to ensure she treats each client individually.   She conveys her passion and creativity to motivate each of her clients.  She is known for inspiring trust from customers, colleagues, and team members through open communication.  Her experience includes: Boot Camp, Yoga, Stretching, Training clients for specific Events and Personal Training people of all ages, shapes and sizes.

With Alisha’s nutritional guidance and fitness routines, total fat lost for her clients has averaged between 3%-10% and 3 – 15 total inches lost in a four week time frame. Alisha is continually educating herself to get the most out of the current research to get the most out of her clients.