KJ-Fitt
Personal Training & Nutritional Coaching

KJ-Fitt Personal Training & Nutritional CoachingKJ-Fitt Personal Training & Nutritional CoachingKJ-Fitt Personal Training & Nutritional Coaching

KJ-Fitt
Personal Training & Nutritional Coaching

KJ-Fitt Personal Training & Nutritional CoachingKJ-Fitt Personal Training & Nutritional CoachingKJ-Fitt Personal Training & Nutritional Coaching
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Let's do this!

Kickstarting Healthy Lifestyles

Kickstarting Healthy LifestylesKickstarting Healthy LifestylesKickstarting Healthy Lifestyles

Let's do this!

Kickstarting Healthy Lifestyles

Kickstarting Healthy LifestylesKickstarting Healthy LifestylesKickstarting Healthy Lifestyles

Meet Your Personal Trainer

Kelly Jansens Mensch

Kelly is a fitness & business professional, author, animal lover, surfer, traveler, and a cheerleader at heart.


Like many, she has struggled in the past with body image and tried various diets, which led to fatigue, frustration, and weight gain. Kelly has faced and overcome her own digestive issues, food sensitivities, and most recently, hormonal, and other physiological changes.


During the pandemic of 2020, when many gyms were forced to close, she searched for a way to stay in shape with little or no equipment. An eternal optimist who always looks for the upside to life's challenges, Kelly saw an opportunity to help not only herself but others, by founding KJ-Fitt.


A driven individual who has overcome health and fitness obstacles in her own life, Kelly now stands ready to extend her experience, research, and training to help you be the best version of you.


Most importantly, she is ready to challenge you, support you, and guide you along that path to a healthier lifestyle!


Knowledgeable Training Expertise

 Kelly is a NASM-certified personal trainer and nutrition coach. She has led an active, adventurous lifestyle, beginning with scholastic & collegiate sports, and working as an aerobics & fitness trainer.


Kelly brings a diverse range of experience to her KJ-Fitt clients, having studied & trained in weight-lifting, group exercise, functional kickboxing, Krav Maga, melee weapons, surfing, and snowboarding.


To ensure the best results for her clients, most KJ-Fitt programs include nutrition coaching and customized workouts. Kelly is great motivator who will help you crush your fitness goals. It must be that cheerleader heart!
 

Extra 'T

 Why the extra "T" in KJ-Fitt? Everyone is unique and has their own body styles, so Kelly puts the extra "T" in fit(t), designing the right program for you. Think of it like a favorite T-shirt, some like ‘em loose fit and others like ‘em snug. 


Kelly will ensure your program fits you to a “T”!

Come on, let’s do this together! If you will devote just 15 minutes a day, you are on your way to a healthier, more active lifestyle. Kelly's can and will set you up for success by kickstarting an obtainable plan that provides big results. 


Every KJ-Fitt consultation includes goal setting, body assessment, weekly check-in’s, and training programs that you can do in the convenience of your home or at your favorite gym. And that’s just the start!

Workshops & Challenges

Sugar Shut-Down Challenge - 5/19/25 - 6/8/25

$52.00
Pay with PayPal or a debit/credit card

KJ-Fitt 21 Day - Sugar Shut-Down Challenge will help you ditch the sugar to kick start a new, healthier, more fabulous lifestyle (and to say sayonara to the sweet stuff for the long haul!). 

Over the next 21 Days, you will find and learn where & how sugar has been holding you back from reaching your health goals and then put it into action with a 14 day “Sugar Shutdown” where we will transition away from sugar.

The challenge will be broken down as follows:

Day 1 to 7 : Becoming a Sugar Sleuth

Day 8- 21: Follow the 14 Day Sugar Shutdown

Day 21:  – Stepping into your new you

PLEASE NOTE: 

***Make sure that you are cleared by your doctor to participate in an exercise program and new eating strategy.

Workshops & Challenges

KJ-Fitts 21 Day Walking Challenge

$0.00

Ready to walk with purpose? Join KJ-Fitt’s FREE 21-Day Walking Challenge — starting May 5th!  This isn’t about steps. It’s about showing up intentionally and logging time spent walking — for your body, mind, and each other. 💪🏼 No fee. Just a commitment to walk, encourage, and keep a good attitude. 🙌  👉 Sign up by May 3rd: by emailing Kelly@KJ-Fitt.com

Let’s move forward together. 🧡 

Natural Supplements & Minerals // KJ-Fitt Gear

KJ-Fitt Blog - Fitness & Nutritional Information & Tips

KJ-Fitt Client Testimonials

Ready to Get Started? Let’s Connect!

If you’re here, you’re likely looking for guidance but aren’t quite sure where to begin. Let’s start the conversation! Take that first step by sharing a bit about yourself and what you’re looking for. We’re here to help you get started.

KJ-Fitt, LLC

Grand Rapids, Michigan, United States

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