6 Days of Weights, 1 Day of HIIT, and a Refeed Day: Inside the Spartan Routine That’s Taking This 42-Year-Old to Single-Digit Body Fat (Fast)

 Written by 

Julien Raby

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With just five weeks left before stepping on stage, one of the BUFF Dudes is doing things a little… differently.

Forget grinding through endless cardio sessions or starving yourself to get lean. This 42-year-old competitor is prepping for his first Natural Classic Physique show with a surprisingly minimalist—but brutally effective—approach to fat loss.

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Instead of daily runs or two-a-day sessions, he’s doing just one cardio workout per week. That’s right—one. And it’s working. Big time.

So what’s the secret? A mix of old-school grit, dialed-in nutrition, high-volume resistance training, and a single weekly HIIT session that’s short, savage, and scientifically sound.

Here’s exactly how he’s burning fat, preserving muscle, and proving that simple doesn’t mean easy.

A Science-Backed Fat Loss Strategy that Breaks the Mold

Most aspiring physique athletes assume hours of treadmill time are necessary to get lean. But this competitor is doing just one weekly cardio session. That’s it.

The format? High-Intensity Interval Training (HIIT) on a stationary bike—

  • 20 minutes total
  • 20 rounds of maximum effort for 20 seconds
  • 40 seconds of active recovery between each sprint

“20 minutes doesn’t sound long, but it’s extremely strenuous,” he says. “You better warm up for at least 10 to 15 minutes and be ready to feel pain like never before.”

Training: High Volume, Low Rest, Maximum Output

Workouts are performed six days a week and emphasize intensity and volume. He’s incorporating supersets, keeping rest times short, and maintaining consistent resistance throughout his training to retain muscle size and definition.

This muscle-sparing structure is crucial during a cutting phase. Intense training sends the signal to hold on to muscle mass even when calories are low. Combined with his minimal but fierce cardio, it creates a potent fat-burning environment.

Diet: Precision Calorie Control with Refeeds

The nutritional aspect of his plan is where many fall short—but it’s one of the biggest reasons this plan is working so well.

For six days a week, he consumes 2,700 calories, locked in at a macro split of:

On the seventh day, he increases his intake to 3,200 calories, but only by adding 500 extra calories from carbohydrates. “That’s my refeed day,” he explains. “It’s strictly more carbs—no other changes. This helps replenish glycogen and prevents metabolic slowdown.”

The refeed strategy helps reset leptin levels and supports better training performance without the negative effects of diet fatigue or stagnation.

Mindset Over Motivation: Grit is the Game-Changer

“There’s a quote I love: The difference between a talented person and a successful talented person is grit,” he shares. And it’s clear there’s no shortage of it in his routine.

At 42 years old, he says he’s finally found a formula that works by aligning diet, training, and cardio. “In the past, I often tried to outrun a bad diet with excessive cardio. I never got this lean—or did it this efficiently—until I got everything working together in unison.”

The HIIT Protocol: What You Need to Know

HIIT isn’t new, but many people misuse or misunderstand it. Done right, it’s supposed to be short, fierce, and something you can only perform sparingly due to how physically demanding it is.

This method slashes body fat while preserving hard-earned muscle because the stress is high—but the duration is appropriately short.

Here’s how to replicate his 1x/week HIIT method:

  • Choose your modality: stationary bike, treadmill, track sprints, jump rope
  • Warm up for at least 10 to 15 minutes
  • Perform 20 rounds of 20 seconds all-out effort
  • Follow each interval with 40 seconds of lower-intensity movement
  • Total session = 20 minutes

That’s it. No extra cardio. One session. Full intensity.

Why This Works: Compound Effects of Consistency

When cardio, nutrition, and resistance training work together—rather than against each other—the results are drastically improved. He describes it as “a multiplier effect.”

“Now that I’ve got them all locked in, everything is responding two to three times better than before,” he says. “It’s simple, it’s consistent, and it’s effective.”

While many people rely on cardio as a reaction to overeating, or treat it as punishment, this plan treats it as a focused weapon. It’s sharp, targeted, and powerful—especially when used with intention and timing.

Final Five Weeks: Dialing In With Discipline and Passion

As he pushes through the final weeks before stepping on stage, both physical discipline and mental toughness are being tested. But he’s not doing it alone.

To stay motivated, he even created a song for his final bursts of HIIT called “Flesh and Steel”. Crafted with the help of a Turkish composer and an Italian opera singer, the track is meant to get listeners pumped to push through their own high-effort training sessions.

“You can check it out on Spotify and use it to grow into the true you,” he says.

Bottom Line: Simple Doesn’t Mean Easy

Getting stage-lean isn’t magic—it’s method. But above all, it’s grit.

This plan works because it’s simple in design but demands consistency, intensity, and discipline. The strategic use of one HIIT session per week is only effective thanks to meticulous nutrition, smart resistance training, and a no-compromise mindset.

Whether you’re prepping for your first competition or simply want to burn fat and retain muscle, this approach offers an inspiring blueprint worth trying—if you’ve got what it takes to go all in.

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