Flash Fitness Gym & Personal Training, Group Classes & Fitness Programs. Train Smarter
  • Flash Fitness Gym and Personal Training in Sathorn
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MORE TESTIMONIALS...
​IT'S TRUE,
we have too many to even read!

Testimonials
More Members Sharing Their Results

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Here are More Stories from People Just Like You

To my delight, I have about 3 extra inches of fabric around the waist!! The butt and legs are loose! WOW!!! I haven't worn them since I started working out with you. I am sooooo pleasantly surprised!! THANK YOU for training me and more than that, for giving me a new healthy perspective about working out! :)
-Christy Larson


WE DID IT! I wanted to lose 3 dress sizes before the New Year. Everyone was saying how great I looked. You gave me more than just a new body. You gave me more than inspiration, so much more. You are the words people ignore when they are down on themselves. You are my confidence. You gave me my “will” back. I will always be grateful for everything you helped me attain and become.  Thank you for never giving up on me.
– Norma Vega.
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You are a constant source of inspiration to me. It is obvious that your care for your clients far surpasses the initial time spent with them and extends to long term relationships. I certainly hope that as you pursue your own dreams you will experience the same success that you have empowered so many of your own clients to experience. You have left your mark of greatness on the lives of many people.

- EileenBurkey.
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It's been great..it's tough. But I can really see the results. I've now lost almost 50 pounds and 8.5 inches off my waist since last June! The skirt I was wearing in April, it is denim and doesn't stretch at all. I used to not be able to get into that and now I can even put my hands in them. It just falls off. So, Yup! It's been great!
-Lara Mitchell

I've lost around 60 pounds of fat now since I started with Jeff. When we started, I thought the warmup was the workout! I wasnt able to do a single pushup. Not only have I lost all that fat, but I have become quite strong. I have deadlifted over 340 pounds and push pressed 200 pounds. I am honestly amazed at what I have been able to accomplish working with Jeff. It has changed my life. I will keep this up forever.
-Chris Harkins
Flash is truly amazing. I never thought I could be this fit after 40! You have changed my life and I love our Flash Fitness family. Thanks for everything.
-Shannon R.
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"#1 Gym Ever!!
I lost over 9 inches! That is every woman's dream."

-Kelly Gunn

I'm soon to be 69 years and I've never felt better. Its usually only 20 minutes. You wouldn't think 20 minutes could make a difference, but I've lost 20 pounds. (She is now at over 50 lbs, btw) I've had to have all my clothes taken in! I started this to become stronger, which I have; but the losing the inches and the weight were a great added bonus. Thank you!
-Nancy Rasmussen



First, it's been such a very positive experience! I've trained with Jeff for 9 months and have made a huge amount of progress. We don't use machines, just free weights and bodyweight. Very simple...but it's been very effective. I recommend it to anyone.
-Dr. Eric Rasmussen


I've lost a lot of fat around my face and belly. About 20 pounds. Thank you for all of your hard work and dedication. I've never felt as good as I have since joining Flash Fitness. We've also made so many friends along the way.
-Phil W.

You guys are such an awesome team. Genuinely caring, extremely intelligent and humble. Thank you for continuing to challenge and educate everyday. We are also lucky to have you two as our trainers and friends. I write this as I am still sore from yesterday's workout.
-Michelle M.


Amazing person and amazing trainer! After achieving so much success with his program, I was inspired to become a trainer myself. He made working out something to look forward to by being creative and having fun.The people of Thailand will truly be in the presence of a remarkable trainer and caring person. I will sure miss them here in California!!"
- Amie Souza


“The strength you get you keeps you from getting the ailments that you would get if you didn’t do this.
It’s made me a lot stronger and lot more confident. I didn’t realize how much strength that I had until I did the exercises.
I’m in absolutely better shape. I feel a lot stronger.
You can feel you are getting the maximum benefit in each workout.”

-Pam R.
This was one of the best investments my husband and I have ever made! For years after having my two children, I struggled taking the inches off my waistline. Training with Jeff for a few short months resulted in 2 inches off my waistline! I look and feel better, and my clothes fit so much more comfortably! I am so pleased with the strength I've developed and have been able to continue the training on my own. Thank you!"
-Cherry Acosta.
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The amazing thing is...in just 20 to 30 minutes a day and three days a week, you can get such results. Results you can see! I used to workout at the gym by myself, but I didn't see the result. I have gotten lean here. A lot of people have been asking me "What are you doing?"-
- Jeep Jeerayu
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I've definitely felt a difference in my energy and seen a difference in my strength. I used to box (Muay Thai) and it got me pretty fit, but your style workouts have really improved my strength and fitness levels.
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-Carolyn Cavanaugh
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GREAT ENERGY AND POSITIVITY! Thank you! The workouts were tough but the results were phenomenal. Working with you got me in the best shape of my life. With a terrific personality and attitude it was like I wasn't working out with a trainer- I was working out with friends.
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–Wendy Olson.
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I've trained with Jeff for 2 years. It's made a great difference to my life.
-Jackie Thompson
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What Our Clients Are Saying

“The results speak for themselves. I have never been this fit in my life.” - Aldo C.

”I can’t explain Flash to my friends. It’s like a myth. It’s just different than anywhere else I have been. The results are remarkable.” - Moritz

“The results are truly amazing. You have honestly changed my life.” -Shannon R.

Contact Us

  • Flash Fitness Gym and Personal Training in Sathorn
  • Online Course
  • Personal Training
  • Class Schedule
  • Blog
  • Testimonials
  • Rates
  • Strategy Session