A RISK-FREE Start To Your Fitness Journey with

The Truth: Most Fitness Programs Fail at Results Because They Ignore What’s Most Important…Your Physiology

At Flash, You Will Work WITH Your Physiology

Your physiology…your hormones, your glycogen stores, etc…doesn’t care about what is trendy or what exercise selfies get the most attention.

It only cares about physiological adaptation.

By creating the right training stimulus, we help you fix your metabolic environment…this makes getting results easier and keeping them more sustainable.

We often tell Flashers  “it’s easier to cut down a tree when you’ve sharpened your axe.”

Building a lean, strong, and metabolically healthy body isn't something you do through "calories,”…it's the side effect of building a healthy metabolic state.

🤫 This is why we don’t rely on “influencers” & generic fitness certs when designing our program..

We focus on real  PHYSIOLOGY, creating a “metabolic shift” and helping you build a body that naturally burns more fat, and stays leaner.

We build your metabolic health first.  Nature holds the keys to your success…NOT typical fitness “industry stuff.”

3 Easy Steps To Get Started

You can leave the science of results to Ritah and I. You don’t need to figure it out alone. Just follow our proven program and personalized advice. We will guide you every step of the way. 

Step 1: Set Up Time a Time & Day with Ritah

Contact Ritah to schedule your start date, set up your workout times, and complete your initial Flash Audit paperwork so we can begin designing your personalized nutrition and habits protocol. 

Step 2: Do 21 Workouts & Follow Your Nutrition

Show up for 21 sessions in 8 weeks (just 3 x 30 minute workouts a week) and stick to your personalized Flash nutrition guide we created for you.

Step 3: Win 50% Back ..or Get 100% Refunded

Complete all 21 workouts to win 50% of your money back. If you don't get results, Ritah and Jeff take full responsibility and refund you 100%.

For 30 years, we’ve been figuring out what workouts/programs actually change a body best. 

We’ve tested everything. Kept what worked… threw out what didn’t. The Flash system is tested and proven. 

Your personalized journey and habit protocols will improve your body’s metabolic and hormonal state.

❌ No apps. ❌ No calorie and macro counting. We will work together with you to find smart, doable changes that your body responds to.

🏆Started with 8 Weeks. Got Results. Stayed for 10+ Years.

Yes. You’ll see results FAST… (because the program works). But, you’ll get results that are sustainable.  

If you want to starve yourself and do endless cardio, Flash is not for you. 

If you want to get fit fast…then stay fit for life…

Then Flash is For You.

Over 35?  The Flash Program Is Perfect For You.
Coach Jeff is 54. Coach Ritah is 51.

More than 75% of our clients and members are professionals over 35…

We have literally decades of experience training people in their 40s, 50s, 60s+… and understand better than anyone what works for them.

The fitness industry is now using “longevity” as a new marketing buzzword. 🙄
At Flash, it’s what we‘ve mastered, always done and built our reputation on.

Helping people feel younger, fitter and healthier…and staying that way for life!

Our Workouts are Designed To Keep You Burning More Fat Over 36-72 Hours

The Truth About All These Results…

We gotta be honest with you.

Flash is NOT a big, fancy gym. 

We’re just a tiny, private gym, on the 5th floor above a restaurant.

Two showers. A small parking lot.

Just two trainers- Jeff & Ritah (Husband/Wife) wIth no sales staff. No staff of trainers…all with different skill levels, philosophies and methods…

No. Just Jeff and Ritah…making sure every member gets the same consistent levels of commitment and results.

We have almost ZERO social media presence. We’re too busy spending our time on the things that make us good trainers…Getting people the results you see on this page 

If you don’t mind a small, private gym…If You Want BIG RESULTS…

Then …Flash Fitness is the place.

That’s what’s kept Sathorn people coming for 14 years.

30-Minute Program Designed For Busy Lifestyles

But someone on the internet said... "You Must Exercise 60 Minutes a Day."
According to science...WRONG!! 🤦‍♀️

It's not 1985! Let’s Train SMARTER,..🧠
✅ ​Exercise STIMULUS Gets RESULTS.
​ ❌ NOT “TIME” spent exercising.

 ⚠️ Wait… Flash Might Not Be for You

We’re not for everyone … and that’s okay.

A Note To Beginners & “I’m Not a Gym Person” People!

We get it …walking into a gym can feel intimidating! 

So many people get that “out-of-place” feeling in gym environments. 

That is common and Ritah and I understand.  Many gyms can be full of fitness show-offs and trainers focused more on themselves than actually helping new people. That’s not Flash Fitness. 

A few weeks ago, a new Flasher told us it’s the most comfortable, supportive and encouraging gym they’ve ever been to. That meant a lot to us! That is what we try to create for everyone and have all of our Flash members to thank for that!

We will be right by your side, guiding you… step-by-step. Don’t worry about “getting in shape first.”

If you are wondering if you are fit enough to do the classes…that’s literally what Ritah and I are here for! 💪

Every workout is scaled to YOUR level, even if you’ve never set foot in a gym.

Actually, 30% of our members started as beginners with zero experience!

Come Join Us!

I want to…But…

❌ "I get anxiety just thinking about joining a gym."

✅ Ritah and I totally get it…and it is more common than you think.

We will be right by your side from day one. Many of our long-term members started feeling the exact same way. They stay for years because Flash actually feels good to be in.

❌ "I’ve tried other programs before and didn’t get results."

✅ Most of our members were burned elsewhere before coming to us.

That is why we take away the risk. If you don't get results in 8 weeks, you get 100% of your money back. No guessing, no risk.

❌ "I hate gyms full of ego, loud music, and hardcore snarls."

✅ So do we.

Traditional gyms can feel intimidating and unfriendly. Flash was built specifically as a welcoming, comfortable space for people who hate typical gym culture.

❌ "I’m out of shape, older, or completely new to fitness."

✅ Our program meets you exactly where you are today.

You don't need to get fit to start. When you join, Jeff or Ritah will shadow you through every movement to make sure you feel confident and safe.

❌ "I don’t have hours to spend working out every week."

✅ You only need 2–3, 30-minute sessions per week.

Our system gives you maximum physiological results without taking over your calendar. We fit fitness into your life…not the other way around.

❌ "I’ve been burned by inexperienced trainers that got me no results."

✅ You are coached by career professionals, not weekend-certified instructors.

Jeff brings 30 years of training history; Ritah brings over 20. You get decades of real-world expertise and a proven track record.

❌ "Nutrition is confusing and I refuse to track every calorie."

✅ No apps, no tedious calorie counting, no extreme restriction.

We look at your current habits and make small, high-impact adjustments that fit your real lifestyle. Simple, step-by-step, and sustainable.