Niki G Personal Trainer, Boot Camp Instructor and On-Air Fitness Personality

 Niki Gauthier   |  Niki G Training Team

Niki GauthierPersonal Trainer, Boot Camp Instructor

  • Over 20 years experience
  • Former Bodybuilder and Swimsuit Model
  • Mother of Two with personal weight loss of over 50lbs… two times!
  • On-air Fitness Personality and Expert on HSN (The Home Shopping Network)
  • Published fitness writer



Been There, Done That!

I am a mother of 2 girls born in 2001 and 2007 and have successfully lost over 50lbs… two times! I use my experience as a bodybuilder, model, and mother to design my workouts, encourage my clients and continue to motivate others to change their bodies with fitness and real solutions! But, how did I get here? Read on below….

Born to Train                          

Niki Gauthier bodybuilding

Bodybuilding 1997

Niki Gauthier Swimsuit Model

Swimsuit Pageant 2000

Niki and Sam Gauthier Figure and Physique

Niki w/husband Sam 2012


I have been involved in fitness my entire life. As a preschooler I remember watching my mother work out at home. In gradeschool I enjoyed trips to the gym, even if it was only to the childcare area, and always looked forward to the day I was old enough to join in on the action. In middle school, I loved exercising to workout videos and walking outside. In highschool, I finally got a job at the local gym in Brentwood and began bodybuilding. I competed in Bodybuilding contests in 1996 and 1997 at age 17 and 18. Three years later I began competiting in Swimsuit pageants, before and after my first daughter was born. After a long break from competitions, I trained for and competed in my first Figure Competition in the fall of 2012 with my husband who competed in the Men’s Physique division. Sam and I have really enjoyed training together when we can. Prepping our food for the week together and living the healthy lifestyle and setting good examples for our two girls.

Start of a Career

As a senior in high school I became a personal trainer at that gym and taught members how to use the equipment and set them up with plans. The summer after highschool graduation, in 1996, I earned my personal training certification and become a full time in-home personal trainer.

 Excelling at a Passion

Live On-air on HSN and America’s Store for Proform Fitness

Swimsuit pageants led to an additional career of promotional modeling for companies like Stacker 2, and while living in Tampa Bay, FL I became a regular guest and Fitness Expert on HSN (The Home Shopping Network). During this time, I owned and operated a fitness studio in FL. It was there that I began developing my Weight Loss Boot Camp.

Niki G’s Boot Camp

After moving back to Tennessee, I started Niki G’s Boot Camp in 2009 at River Park in Brentwood. A year later, I hired my first trainer and have since hired and trained sevreral more to teach my Boot Camp classes. Since then, thousands of ladies Nashville area have benefited from my classes. In a addition to the boot camp classes, I founded a running group, TEAM NIKI G, who train together and run races as a group and also and charity group, Niki Angel’s which provides community service and holds drives for those in need.

Niki G’s Fitness continues to grow with strong leadership from our trainers and an amazing group of women who attend our classes!

Whether it’s one-on-one, in small groups or live on TV in front of thousands of people, sharing my love of fitness is my passion. By sharing with you my experience, knowledge, and concern for your health, I am living my dream.

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"Love the boot camp format, the variety of the workout from visit to vist, the encouraging trainers, and the progress you can make"