Steve Theunissen

Steve Theunissen, PT

Fitness Editor

  • Expertise: Fitness expert specializing in muscle building, strength training, and nutritional guidance for optimal body composition.
  • Experience: Three decades of experience as a pioneering personal trainer and gym owner, with over 20 published books on fitness and bodybuilding.
  • Education: Graduate of Massey University, New Zealand, holding six certifications from the International Sports Sciences Association (ISSA).
  • Favorite Exercise: Seated Cable Bench Press


  • Authored over 20 books on fitness, bodybuilding, and weight loss.
  • Featured in prominent publications like Men’s Fitness and New York Weekly.
  • Extensive experience in personal training and gym management, pioneering the field in New Zealand.
  • Writes on diverse topics, including history with a focus on warfare.


Steve Theunissen started his career in the mid-80s as one of New Zealand’s first personal trainers, establishing a strong foundation in the fitness industry. His expertise expanded through owning and managing a gym, where he gained comprehensive knowledge of fitness operations.

In addition to his hands-on roles, Steve is an accomplished author, having written over 20 books on fitness, bodybuilding, and weight loss. His contributions have been recognized in notable fitness publications, cementing his status as an expert in the field.


Steve’s academic journey began at Massey University in New Zealand, setting the stage for his career in fitness and nutrition. He further enhanced his expertise with six professional certifications from the International Sports Sciences Association, covering a wide range of fitness and nutrition specialties.

About Fitness Volt

Fitness Volt’s built from an incredible team of industry professionals, all with a wealth of knowledge in their respective fields. We take pride in everything we post, satisfying our readers with content to help them drive results and deepen their understanding of their fitness regimes.

It’s our mission to supply readers with knowledge from a wealth of backgrounds; we believe it’s what attributes towards a successful route to your physique goals! Our review board understands the often trying challenges that face you when delving into the challenging world of fitness; we fact-check only authentic, result-driven pieces of information. Therefore, you can rest-assure only the best topical guidance makes it onto our page.

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Articles by Steve Theunissen

Diet Plans


Female Fitness


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Exercise Guides




Celebrity Workouts

Bodybuilding Program

Muscle Science

Nutrition Tips