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Our Trainers

Core & More Fitness > Our Trainers

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Jason King

OWNER & PERSONAL TRAINER

Jason King is a certified personal trainer with over 25 years of experience. I’ve been in this industry since the start of 2001 non stop with over 35,000 training hours.

Core Traits

Results-Focused

Training built around clear goals and steady progress.

Time-Efficient

Effective workouts designed to fit busy schedules.

Client-Centered

Programs tailored to individual needs and abilities.

Consistent Approach

Emphasis on discipline, form, and long-term results.

About Jason King

Jason King is an experienced fitness professional with more than two decades of hands-on experience in personal training and program development. He specializes in creating efficient, results-driven training plans tailored to individual goals, schedules, and fitness levels. His approach emphasizes consistency, proper technique, and long-term progress. His training philosophy is built around practical methods that fit into everyday life. With a strong focus on accountability and measurable outcomes, Jason works closely with clients to help them build sustainable habits and achieve steady improvement through structured and focused training.

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Kim Jirak

WOMEN’S PERSONAL TRAINER

Kim is a certified women’s personal trainer with over 30 years of experience helping women improve strength, fitness, and overall health through structured and supportive training programs.

Core Traits

Goal-Focused

Training designed around personal objectives and steady progress.

Time-Conscious

Efficient sessions that respect busy schedules.

Women-Centered

Programs tailored to women’s needs and fitness levels.

Consistent Method

Emphasis on form, balance, and long-term results.

About Kim Jirak

Kim is an experienced fitness professional with more than three decades of hands-on experience in personal training and program development. She specializes in weight management, strength and conditioning, stability, flexibility, and overall wellness, with a strong focus on women’s fitness.
Her training philosophy is built around practical methods that fit into everyday life. With a clear focus on accountability and measurable outcomes, Kim works closely with clients to help them build sustainable habits and achieve steady improvement through structured and focused training.

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Christine Payne

PERSONAL TRAINER

Christine is a certified personal trainer dedicated to helping individuals build strength, improve endurance, and develop confidence through balanced and engaging training programs.

Core Traits

Endurance-Based

Training informed by experience in long-distance and endurance athletics.

Strength-Focused

Programs that emphasize strength as the foundation for performance.

Well-Rounded Approach

Balanced routines that support overall fitness and movement.

Positive Coaching

Encouraging, engaging guidance that keeps training enjoyable.

About Christine Payne

Christine began her fitness journey teaching indoor cycling before earning her personal training certification. As a four-time Ironman finisher, she brings a strong understanding of endurance training and the role strength plays in long-term performance and injury prevention.
Her training philosophy centers on creating structured yet enjoyable programs tailored to each client’s needs. Christine is committed to helping clients discover their inner strength through consistent training that supports both physical capability and confidence.

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Mike Shishan

PERSONAL TRAINER

Mike S is a certified personal trainer focused on helping individuals build strength, improve movement, and support everyday performance through structured and effective training programs.

Core Traits

Results-Oriented

Training designed around personal objectives and steady progress.

Form-Focused

Emphasis on proper technique and safe movement.

Functional Training

Workouts built to improve daily strength and mobility.

Supportive Coaching

Consistent accountability, guidance, and motivation.

About Mike Shishan

Mike S is a dedicated fitness professional with a strong background in strength training, athletic performance, and corrective exercise. He specializes in creating personalized training programs that challenge clients while maintaining safety and confidence throughout the process. His training philosophy centers on smart programming, functional movement, and steady progression. With a balanced approach that combines motivation and accountability, Mike works closely with clients to help them build strength, improve endurance, and move better in everyday life.

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Core & More Fitness is a private training studio focused on strength, movement quality, and long-term health. We work with real people, real schedules, and real goals

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