Josh Kintigh · October 12, 2026
If you’re taking a GLP-1 medication and watching your weight come down, that can feel like a huge breakthrough. Your appetite has changed, your clothes fit differently, and the scale is finally moving.
But there’s an important question behind that progress: What exactly are you losing?
When we talk about improving body composition, we want to understand how much of that change is coming from fat—and what’s happening to your lean tissue along the way.
Weight Loss Doesn’t Tell the Whole Story
The scale measures your total body weight. It doesn’t separate fat, muscle, water, bone, and other tissues.
That means two people can each lose 30 pounds and have different outcomes. Their fat loss, lean-mass changes, strength, and physical capabilities may look very different.
Both can celebrate their progress. But the number on the scale alone doesn’t explain the full result.
At Kinetix, that’s why I want to look beyond pounds lost. What happened to your body composition? What happened to your strength? How are you functioning day to day?
Lean Mass and Muscle Aren’t the Same Thing
You may have heard that some of the weight lost during GLP-1 treatment can come from lean mass. That deserves attention, but it also needs to be explained accurately.
Lean mass includes more than skeletal muscle. It includes water, organs, and other nonfat tissues. Losing five pounds of lean mass on a DEXA scan does not automatically mean you lost five pounds of muscle.
At the same time, we shouldn’t ignore muscle preservation during substantial weight loss. Current clinical guidance emphasizes adequate nutrition and resistance training as part of GLP-1 treatment.
The useful question is what your measurements and physical performance show together.
What Does Your Progress Look Like Beyond the Scale?
Imagine someone who has lost a substantial amount of weight. Their clothes fit better, and they’re pleased with the change.
Now imagine reviewing that progress with a few additional questions:
- Are they maintaining their strength?
- Are they eating regular, balanced meals?
- Are they consistently including protein?
- Are everyday activities becoming easier?
- Do their body-composition results show the changes they were aiming for?
Those answers give us a more useful coaching conversation. They help us decide what to continue and what needs adjusting.
A lower body weight is one measure of progress. It shouldn’t be the only one.
Put Nutrition Into the Weight-Loss Plan
GLP-1 medications can reduce appetite, which can make meeting nutrient needs more challenging. Adequate protein and nutrient-dense meals are priorities during treatment.
From a coaching standpoint, I want to know what you’re actually eating. Are you having structured meals, or getting through the day on a few small snacks? Does each meal have a meaningful protein source?
A food log helps us answer those questions. It gives us something concrete to review rather than assuming that eating less means eating well.
My approach is to build meals around practical foods you enjoy and can tolerate, then set targets that fit your body, activity, goals, and medical needs.
Give Your Muscles a Reason to Stay Strong
Resistance training belongs in the plan because protein alone does not provide the same muscle-preserving stimulus as training. The joint clinical advisory recommends combining adequate protein with strength training during GLP-1-supported weight loss.
In practice, I want a routine you can repeat consistently. That might include exercises built around squatting, hinging, pushing, pulling, and carrying, adjusted to your experience and physical limitations.
Record what you do. Tracking resistance, repetitions, and exercise quality gives us a way to assess performance as your weight changes.
The aim is to make strength part of your progress from the beginning.
Use DEXA as Part of the Bigger Picture
A DEXA scan can help us review fat and lean-mass trends. It adds information that a bathroom scale cannot provide.
But a scan should be interpreted alongside your training history, food intake, and physical performance. It doesn’t directly tell us how strong you are.
For coaching, I like to bring those pieces together:
Body composition + nutrition + strength + everyday function.
That gives us a clearer picture of where you are and what your next step should be.
Build a Plan Around the Body You Want
In my “GLP-1 Fat or Muscle?” podcast, the main question is simple: What is happening beneath the weight-loss number?
At Kinetix Performance Coaching, we use DEXA review, food-log analysis, and personalized training to help you answer that question and build a practical plan alongside your prescribed treatment.
Taking a GLP-1 and want to understand your body-composition changes? Contact Kinetix Performance Coaching to schedule an assessment.
By Josh Kintigh | Kinetix Performance Coaching
Strength • Nutrition • Longevity
