Our Coaches

Iming Shieh is the founder of TBD.fit and a specialist in functional fitness, biomechanics, and performance training. His approach targets the gap between physical therapy and personal training, helping clients move better, build strength, and stay pain-free.

He emphasizes quality movement over heavy lifting, designing programs that adapt to each client’s goals and limitations. Many of his clients come to him after injuries affecting the back, knees, or shoulders, looking for lasting solutions that restore confidence and performance.

With more than a decade of experience in rehab and sports performance, Iming is known for his ability to simplify complex movement principles into clear, actionable coaching. His clients value his precision, patience, and results-driven approach that blends rehab, strength, and athletic development.

Professional Background

• Physical Therapy Aide: 1.5 years of experience assisting clients with a variety of injuries.
• Sports Performance Trainer & Certified Personal Trainer: 8+ years of helping clients of all fitness levels achieve their goals.

Areas of Expertise

Iming specializes in designing personalized programs for clients managing conditions such as:

• Rheumatoid arthritis
• Joint replacements (knee, hip, shoulder)
• Connective tissue disorders and joint laxity
• Hamstring, rotator cuff, and plantar plate injuries

His areas of focus include:

• Sports Performance
• Rehabilitation
• Functional Fitness
• Strength Training
• Rotational Athlete Training

Iming has extensive experience working with rotational athletes, tailoring programs for sports like:

• Volleyball: Strength and performance training
• Tennis: Injury prevention and skill-specific conditioning

Education & Certifications

• B.S. in Sports Nutrition
• Precision Nutrition Level 1 Certified
• DBC Level 1 (Biomechanics)
• Certified Personal Trainer (CPT)

Iming’s holistic coaching model integrates rehab science with performance training to deliver long-term results that go beyond symptom relief. Whether rebuilding from injury or pushing for peak performance, he helps clients feel and move at their best.

From a young age, Daniel’s passion for movement was shaped by a life full of athletics, including taekwondo, soccer, American football, and lacrosse. Early injuries taught Daniel the importance of unlearning poor training habits and relearning effective techniques to stay active and healthy. Now, Daniel is dedicated to helping others benefit from the lessons they’ve learned, offering a foundation of nutrition, movement, mindset, and recovery for building a healthier, stronger body.

Daniel’s expertise includes:

• Creating Sustainable Fitness Plans: Helping clients achieve and maintain their fitness goals for long-term health and longevity.
• Holistic Approach to Wellness: Addressing fitness through movement, recovery, and mindset.
• Functional Fitness: Strengthening clients’ everyday movement patterns for better performance and reduced injury risk.
• Correcting Movement Biases: Identifying and addressing improper mechanics, such as overusing the lower back during exercises.
• Overcoming Chronic Injuries: Helping clients manage and recover from nagging injuries.
• Injury Prevention: Reducing risks for common injuries like ACL tears and Achilles strains.
• Breathing Mechanics: Introducing clients to the importance of proper breathing techniques to enhance performance and manage stress.

Training Philosophy

Daniel believes exercise is medicine and uses functional movement as a tool for injury prevention and performance enhancement. Their training background as a strength coach and personal trainer provides clients with a unique advantage by combining injury prevention strategies and skill-based training. Incorporating breathing practices into every program has been particularly impactful, helping clients manage stress and improve performance with a holistic approach.

Qualifications

• Physical Therapy Aide: OPTM Physical Therapy
• Bachelor’s in Exercise Science: California State University, Monterey Bay
• Yoga Breathing Coach

Certifications

• Certified YOGABODY Breathing Coach
• Functional Movement System (FMS) – Level 1
• Strength and Conditioning Specialist (NSCA-CSCS)

Daniel is passionate about empowering clients with the tools and knowledge to achieve their fitness goals while staying healthy for life.

Gianna believes in bringing a growth mindset to every aspect of training, whether in sport, recovery, or daily movement. A former track and field sprinter, she now works with athletes, clients recovering from injury, and anyone who wants to feel stronger and more connected to their body.

Having experienced injuries herself, Gianna understands how proper training and movement awareness can accelerate recovery and prevent setbacks. Her coaching focuses on helping clients understand their bodies, build confidence, and progress safely while pushing their limits.

Outside of the gym, Gianna enjoys playing volleyball, coaching high school track and field, and spending time with friends. Her positive energy and curiosity inspire clients to explore their potential and enjoy the process of improvement.

Diana believes movement is more than exercise. It is the foundation of long-term wellness and quality of life. Her passion for people and fitness drives her to help clients feel stronger, move with confidence, and build lasting habits that support their daily lives.

An avid volleyball player since 2013, Diana learned the importance of injury prevention after experiencing an Achilles tendon injury from overuse. That moment deepened her commitment to training for both performance and longevity, combining functional strength, yoga, and mobility in her coaching.

Her approach looks at the whole person. She integrates recovery, nutrition, sleep, and stress management to support overall well-being. Diana works with athletes, parents, and professionals to prevent injuries, restore balance, and develop sustainable strength.

Outside of training, Diana manages a float spa, plays volleyball, enjoys concerts and cooking, and spends time with loved ones. Her goal is simple: help every client feel capable, energized, and strong enough to move freely through life.

Davis is deeply committed to personal growth and believes training is one of the most powerful tools for building confidence, resilience, and energy in daily life. With a background in neuroscience and athletics, he approaches coaching as both a science and an art, blending movement, mindset, and performance into one clear path forward.

As a Track and Field jumps coach, Kyoshin-Ryu Karate instructor, and competitive volleyball player, Davis brings a versatile and adaptive style to every session. He meets clients where they are, helping them set meaningful goals and take ownership of their progress. His coaching emphasizes awareness, discipline, and intelligent training that supports both long-term health and peak performance.

Known for his positivity and enthusiasm, Davis creates an encouraging environment that challenges clients to grow while building confidence in their bodies and abilities.

Certifications
Certified Personal Trainer (ISSA)