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       PsychoPhysiologist             Unique Training & Experience       How I Work & Where

For nearly three decades, I’ve worked with clients on three continents to improve how they feel, function, and perform. My background in psychophysiology looks at how the brain, body, and behaviour interact – especially under stress.

I focus on the patterns that drive:

 

  • Personal growth and life direction

  • Physical transformation and weight loss

  • Energy, mood, and resilience

  • Relationship strain and conflict

  • Self-confidence and follow-through

I hold a PhD in Medicine focused on the physiology and psychology of appetite control and energy regulation, along with additional postgraduate degrees in physiology and an MBA.

That academic training is combined with:

  • Work with NYSE- and Nasdaq-listed companies and senior leaders

  • Clinical and consulting roles in health, performance, and behaviour change

  • Experience with professional athletes, performers, and high-profile individuals

 

This mix allows me to connect deep science with real-world decisions, helping people understand how their physiology, emotions, and environment shape their choices and long-term patterns.

My work is practical and highly personalised. I help clients:

  • Map the patterns behind their stress, choices, and results

  • Reframe how they experience and use stress

  • Build simple, sustainable systems for health, relationships, and performance

 

I share this approach through one-to-one work, small programs, and talks on personal growth and physical excellence. Outside the consulting room I’m a competitive cyclist and certified indoor cycling instructor, combining high-intensity training with a commitment to high-quality living.

 

 

 

 

 

 

Qualifications

Ph.D. (Medicine) in Physiology linked to Psychology - Johannesburg, South Africa

M.B.A. - Oxford, United Kingdom

M.Sc. (Medicine) in Exercise Physiology - Johannesburg, South Africa

B.Sc. (Hons) (Medicine) in Exercise Physiology - Cape Town, South Africa

B.Sc. Physiology and Psychology - Johannesburg, South Africa

Professional Memberships

Board-approved member of the American Psychological Association

Member of the Society for Psychophysiological Research

Contact Me

4125 Blackhawk Plaza Circle,

Suite 175

Danville, CA 94506

Tel: (925) 389-3622

e: david@davidspeechly.com

​© 2026 by Dr David Speechly

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