In this episode of Growth Mavericks, host Adam Callinan, founder of Pentane
— the Command Center for eCommerce profitability — sits down with Mark L. Fox, an aerospace engineer turned entrepreneur and health-tech innovator.

Mark shares his journey from Cocoa Beach, working on the Space Shuttle program, to pioneering energy therapy and heart rate variability (HRV) technology for healing PTSD, chronic pain, and stress. He discusses lessons from NASA, the realities of startup marketing, and how innovation, adaptability, and a 10x markup mindset shape business success.

Together, Adam and Mark explore the science of energy exchange, entrepreneurship under constraint, and the magic of turning complex ideas into real-world impact. From engineering rockets to re-engineering the human body, this is a masterclass in curiosity, resilience, and creative thinking.

👉 Learn more about Mark’s work at Resona Health
and grab his book What on Earth Are We Doing to Our Health?
👉 Learn more about Pentane’s real-time profit intelligence platform at www.pentane.com

💡 Key Takeaways

• Mark’s transition from aerospace engineering to health technology shows how curiosity drives innovation.
• The Space Shuttle program taught him adaptability, leadership, and systems thinking.
• Debunking moon-landing conspiracies shows how public perception shapes science.
• Entrepreneurship demands a 10x markup, compelling content, and strategic partnerships.
• Heart rate variability (HRV) is a vital metric for resilience and recovery.
• Energy therapy demonstrates the future of healing through frequency and biology.
• Bootstrapping teaches financial discipline and creative problem solving.
• Marketing and storytelling remain as critical as product innovation.
• Resona Health’s devices are helping veterans and civilians manage PTSD, stress, and pain.
• Building under constraints creates more durable and mission-driven companies.

⏱️ Chapters

00:00 – From Cocoa Beach to Aerospace Engineering
 05:29 – Working on the Space Shuttle and NASA Contracts
 11:05 – The Power of Marketing and the 10x Rule
 17:07 – Transitioning from Aerospace to Health Tech
 25:56 – Overcoming Adversity and Bootstrapping a Startup
 33:48 – The Science Behind Energy Therapy
 47:48 – Managing Stress and Heart Rate Variability

🔥 Sound Bites

🎧 Listen to more episodes of Growth Mavericks:
www.growthmaverickspodcast.com