Limited time offer

$199$149 intro DEXA scan

Alex Schultz
November 30, 2025

How Strength Training Affects Fat Loss

Learn how strength training directly affects fat loss and why DEXA Scan tracking is the most accurate way to measure progress.

Author
5 min read
How Strength Training Affects Fat Loss

Most people still believe cardio is the main tool for fat loss. But if your goal is to lose fat while maintaining a lean, strong, healthy body, strength training is the most powerful method you can use. It changes your metabolism, improves hormone balance, preserves muscle, and creates long term fat loss that dieting alone can never achieve.

At Kalos, we combine strength training guidance with DEXA Scan tracking to show clients exactly how resistance training reshapes their body composition. The data is clear. People who lift consistently lose more fat, keep more muscle, and improve their metabolic health faster.

Here is how strength training directly affects fat loss.

Strength Training Helps You Preserve Muscle While Losing Fat

When you lose weight without strength training, a significant amount of that weight often comes from muscle, not fat. Losing muscle:

  • Slows your metabolism
  • Makes you weaker
  • Reduces definition
  • Makes future fat loss harder

Strength training prevents this. It signals your body to hold on to muscle even while you are in a calorie deficit.

Preserving muscle is essential if you want to look lean instead of deflated.

Strength Training Increases Your Metabolic Rate

Muscle is metabolically active tissue. The more lean mass you have, the more calories your body burns at rest.

Strength training helps you:

  • Build new muscle
  • Maintain existing muscle
  • Increase resting calorie burn
  • Improve long term fat reduction

This means you can eat more while still losing fat compared to someone who has low muscle mass.

Strength Training Improves Hormone Balance for Fat Loss

Strength training boosts hormones that support fat loss, including:

  • Growth hormone
  • Testosterone
  • IGF 1

These hormones improve recovery, enhance fat oxidation, and help remodel your physique.

At the same time, strength training reduces harmful hormonal patterns like:

  • High cortisol
  • Poor insulin sensitivity

This leads to better energy, improved appetite control, and easier fat reduction.

Strength Training Enhances Daily Fat Burning Through NEAT

When you gain muscle and become stronger, you naturally move more throughout the day. You burn more calories through:

  • Walking
  • Standing
  • Fidgeting
  • Activities and chores
  • Overall lifestyle movement

This increase in daily calorie burn makes fat loss faster and easier.

Strength Training Improves Body Composition, Not Just Body Weight

Fat loss is not the same as weight loss.

Strength training improves:

  • Muscle tone
  • Body shape
  • Proportions
  • Performance
  • Symmetry

You look leaner at a higher weight because muscle takes up less space than fat. This is why the scale becomes less meaningful once you start strength training consistently.

DEXA scans show this clearly. Many Kalos clients weigh the same after eight weeks but have:

  • Lower fat mass
  • Higher lean mass
  • Improved definition

That is real transformation.

Strength Training Makes Fat Loss Easier to Maintain

Crash dieting and excessive cardio often lead to regain because they:

  • Reduce muscle
  • Slow metabolism
  • Increase hunger
  • Lower energy

Strength training does the opposite. It creates a strong metabolic base so your body can maintain lower fat levels long term.

How Much Strength Training Do You Need for Fat Loss?

Aim for:

  • 3 to 4 sessions per week
  • Focus on compound lifts
  • Use progressive overload
  • Train full body or upper lower splits

This stimulates enough muscle growth to protect lean mass while burning fat efficiently.

How DEXA Scans Track the Impact of Strength Training

A DEXA Scan shows exactly how strength training is changing your body by tracking:

  • Lean mass in each region
  • Fat mass
  • Visceral fat
  • Muscle symmetry

If fat is dropping and lean mass is stable or increasing, your program is working. If lean mass drops, you may need to eat more protein, reduce cardio, or improve recovery.

The scan removes all guesswork.

Real World Example

A Kalos client wanted to lose fat but relied mostly on cardio. Their first DEXA scan showed declining lean mass. After switching to three strength sessions per week, prioritizing protein, and reducing cardio volume, their next scan showed:

  • 6 lbs fat loss
  • 3 lbs lean muscle gained
  • Improved energy and performance

Strength training changed their metabolism and accelerated fat loss.

The Bottom Line

Strength training is not just for building muscle. It is one of the most effective fat loss tools available. It helps you preserve lean mass, increase your metabolism, regulate hormones, and burn more calories throughout the day.

With DEXA Scan tracking at Kalos, you can see exactly how strength training shapes your body and ensures your fat loss is coming from the right places.

Book Your DEXA Scan with Kalos Today in Downtown San Francisco or Palo Alto!

If you are ready to take control of your health with the most accurate body composition analysis available, it is time to book your DEXA scan at Kalos. Whether you are looking to get lean, build muscle, improve performance, or optimize longevity, our advanced technology and expert guidance will help you get there.

Schedule your scan today at Kalos, your journey to data-driven fitness starts now.

Schedule your DEXA scan today!

Bay Area residents trust KALKalosOS to deliver results. We proudly serve the entire  Bay Area including the following locations: