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GK Fitness
GK Fitness

GK Fitness

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Introduction: I am an ISSA certified personal trainer and certified in sports nutrition. I have a passion for helping you achieve your best version of you. Whether you want to: • lose weight • gain weight • maintain weight • add muscle • improve physical fitness • look/feel better • increase energy • control eating habits • get stronger • improve stress I can help you create the habits you need to accomplish your goals. After losing 75 lbs myself I enjoy helping others be their best. I understand the hardships of being overweight and am passionate about sharing my knowledge. I offer nutrition coaching as well. This will incorporate foods you love so you can create a lifestyle that gives you lasting sustainability. I find it so rewarding to see my clients become healthier, happier, and empowered. In addition I offer personal training. I assess you individually based on your personal level of fitness.

Hired 28 times

Serves Fulshear, TX

Background checked

1 employee

6 years in business

Payment methods

Apple Pay, Cash, PayPal, Venmo

Top pro status

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

Jul - Dec

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Customers rated this pro highly for professionalism, responsiveness, and work quality.

Excellent 4.9

18 reviews


Read reviews that mention:

Anuja B.

Gretchen has been personal training my husband and I and giving us a nutrition plan for the last 6 weeks. We are seeing brilliant results and cannot be happier about working with Gretchen.
GK Fitness's reply
Appreciate working with you both!
Aug 6, 2020
Gurumurthy R.

Personal Training

Great trainer , very flexible
GK Fitness's reply
Thank you so much!
Nov 1, 2020
Kellie B.

Personal Training

Gretchen is kind, knowledgeable, and understanding. She knows how to motivate her clients in a positive and warm way. I have truly enjoyed working with her. She took my needs and abilities into consideration and plans workouts based on those factors. I would recommend her highly and without reservation to anyone looking for a trainer.
Mar 19, 2017
Tia W.

I'd contacted GK Fitness, along with a few others, as I wanted to get back in shape after suffering from a heart attack a year ago, and being a Type 1 Diabetic. GK Fitness was the most timely in replying as others either took a few days to reply, or simply didn't respond. She asked to meet for a "Meet-And-Greet" so as to assess my body and understand more of what my goals were. This impressed me because it showed a professionalism compared to other trainers I've worked with, in the past, who had never done this with me. Too, she is a positive mentor who makes reaching a goal easier while boosting one's confidence. Furthermore, she is punctual for set appointments, is easy to communicate with as she has strong "people skills," but also, for those of us that are inquisitive, with an array of questions pertaining to exercises, and nutritional guidance, she is extremely knowledgeable and trustworthy. I highly endorse GK Fitness as a trainer who can help anyone achieve their fitness objectives as I have seen results after 10-sessions.
Apr 25, 2019
Julia B.

Personal Training

What would I do without Gretchen?! She has been a true partner on my weight loss journey. I started with a plan to see her for 10 sessions, but she’s so great that I’ve lost count of how many sessions we have had. My new plan is to work with her indefinitely. She’s incredibly kind, non-judgmental, and knows exactly how to customize workouts to get results. I feel stronger every week, and am continuing to lose weight at a steady pace. She’s completely changed how I feel about exercise!
GK Fitness's reply
Thank you! It’s a privlege sharing this journey with you!!
Apr 6, 2018
Background Check

Gretchen Klise


  • What is your typical process for working with a new customer?

    I assess fitness level, discuss goals and expectations, and communicate about any injuries or disabilities.

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