Coach Rina
STRENGTH COACH • OPERATIONS MANAGER
Coach Rina
Marina Hiroki, better known as Coach Rina, is a true all-rounder. From dance choreographer and studio owner to bodybuilder, powerlifter, strength coach, and business leader, she brings energy, creativity, and passion to everything she does.
The Journey
Long before stepping onto a bodybuilding stage or under a powerlifting barbell, Rina spent more than 15 years as a Dance Teacher and Choreographer, owning and operating her own dance studio while inspiring hundreds of students through movement and performance.
Sport and physical activity have always been part of her life. From representing Hutt Valley in softball and netball to competitive swimming and dance, she has always embraced challenges and pushed herself to improve.
In 2013, alongside her partner Nick Reynolds, she co-founded Reynolds Nutrition, helping build what would eventually evolve into Reynolds Strength and the thriving community at 318 Fitness.
The Athlete
Building on her performance background, Rina entered the world of bodybuilding, competing in Bikini and Sports Model divisions while creating and performing her own stage routines.
Over the last decade, her passion has shifted toward strength training and powerlifting. Through years of dedicated training, she has achieved national and international success, including world-class lifting performances and a World Record Squat.
“Strong women build strong communities.”
Today, her mission is simple: help more women discover the confidence, empowerment, and freedom that strength training can provide.
Specialties
Beyond Coaching
As Operations Manager of 318 Fitness, Rina is the engine behind much of what happens behind the scenes. She oversees member experience, staff management, administration, social media, website design, marketing, events, and day-to-day operations.
Whether she's coaching clients on the gym floor, designing new merchandise, organising competitions, building community events, or helping members achieve their goals, her focus is always on creating an environment where people feel supported, welcomed, and empowered.
Through Reynolds Strength and 318 Fitness, Rina continues to help women of all ages and abilities build lasting strength, confidence, and healthier lifestyles.