Gary's academic training through the University of Otago and Medical School is in the following fields:

• Sports Medicine (post-graduate diploma - allied medical).
• Physical Education (exercise physiology, biomechanics, coaching theory).
• Rehabilitation (post-graduate diploma - allied medical).

Most importantly, he brings over 50 years of hands-on clinical experience, helping people overcome a wide range of health challenges and become the fittest, healthiest version of themselves. In addition, he has numerous industry qualifications in human nutrition and in the practice of using nutrition as medicine, reinforcing his expertise in applying food-based and other therapeutic approaches to healing and long-term health.

Gary is a specialist practitioner in Hair Tissue Mineral Analysis (HTMA).  HTMA is the single most useful forensic tool for:

• Identifying the root causes of ill-health, injuries that fail to heal correctly and poor performance;
• Determining a person's nutrient status;
• Identifying any exposures to toxic elements such as mercury, lead and arsenic;
• Guiding nutrition and lifestyle-based therapies.

With the assistance of his partner in life, Alofa Kosena, Gary runs a small, private clinic in Wellington and is available for consultations either in person or online, and will also give lectures upon request.​

Alofa, the engine room wizard, effortlessly ensures Gary's focus remains as sharp as a laser beam on the crucial matters, skillfully banishing distractions that wander into his realm.