We're here for one reason: helping you become a better, healthier, more well-rounded athlete.  

Chris Sinclair, Owner and Head Coach

With over 30 years of experience in Strength training and coaching, Chris has developed a deep understanding of athletes and their diversity of needs and has an intense passion for working with people from all fitness and ability levels.

  • CrossFit level 1 certified trainer

  • CrossFit Football Certified trainer

  • CrossFit Kids certified trainer

  • Starting Strength seminar (with Mark Rippetoe)

  • Olympic Weightlifting for Sports Performance (with Trevor Cottrell PhD)

  • Assistant Football Coach- Guelph Collegiate 1993-1997

  • Ontario Powerlifting Association- Limestone open 2nd place 90kg class, December 1994

  • Ontario Powerlifting Association- Kitchener Novice 1st place, July 1993


Shiona Kaastra, Personal Trainer and Functional Fitness Coach

  • PhD Epidemiology, University of Guelph

  • MSc Epidemiology, University of Guelph

  • BSc Honours Molecular Biology and Genetics, University of Guelph

  • CrossFit Level 1 Certified Trainer

  • CPR-Level C

  • Self-described reformed cardio-robot, marathoner, triathlete.

  • Goaltender (ringette/hockey)

  • Epidemiologist

  • Farmer (raising pastured meat, eggs)

Shiona remembers fondly being guilted into trying training at Gridiron and subsequently becoming a total addict.