It’s the breakthrough we’ve been waiting for: GLP-1 and GLP-1/GIP medications like semaglutide and tirzepatide are helping millions achieve life-changing weight loss. But as the pounds drop, a hidden conversation is happening in the medical world about what exactly is being lost.

While these medications are excellent at shedding fat, they can also lead to a loss of lean muscle mass - accounting for up to 25-40% of total weight lost in some cases. If you want to stay active, independent, and strong as you age, simply "losing weight" isn't enough. You need to protect your muscle power.

Watch this short video from physical therapist Dr. Sean Hiller on the importance of training power.

Strength vs. Power: Why the Difference Matters

Most people use these terms interchangeably, but they are different tools for your body:

1. Muscle Strength: The maximum force you can exert (like lifting a heavy grocery bag).
2. Muscle Power: The ability to exert force quickly (like catching your balance after a trip or pushing yourself up out of a chair).
   

The Science of Independence: Research shows that muscle power actually declines faster than strength as we age. While strength is great, power is the better predictor of whether you can live independently in your later years. It’s the "explosive" quality of your muscles that keeps you from falling and helps you react to the world around you.

The GLP-1 Muscle Challenge

When you lose weight rapidly on a GLP-1, your body can enter a large calorie deficit. If it doesn’t get enough fuel from food, it may begin breaking down muscle tissue for energy.

Losing muscle isn't just about looks - it’s about your metabolic engine. Muscle burns more calories at rest than fat does. If you lose too much muscle, your metabolism slows down, which can lead to a weight-loss plateau or make it easier to regain weight later.

Your 3-Step Plan to Protect Your Power

The good news? You can absolutely prevent muscle loss while on a GLP-1 by following these research-backed pillars.

1. Prioritize Protein (The Building Blocks)

Protein provides the amino acids your body needs to maintain its strength and function.

1. The Goal: Aim for roughly 0.6 to 0.7 grams of protein per pound of body weight. For a 150-pound person, that’s about 83-110 grams a day.
2. Strategy: Eat 20-30 grams of protein at every meal (eggs, lean meats, Greek yogurt, or tofu) to keep your muscles in an "anabolic" or building state.
   

2. Resistance Training (The "Hold On" Signal)

Lifting weights or using resistance bands tells your body to burn fat instead of muscle.

1. Strength Sessions: Aim for 2-3 sessions per week.
2. Focus on Velocity: To specifically build power, try "explosive" movements (with control), like standing up quickly from a chair or using faster tempos during the lifting phase of an exercise.
   

3. Monitor Your Weight Loss Pace

Losing weight too fast increases the risk of muscle and bone density loss.

The Sweet Spot: A sustainable rate is generally 1 to 2 pounds per week. This steady pace allows your body to safely burn fat stores while sparing your hard-earned muscle.

The Bottom Line: Quality Over Speed

GLP-1 medications are a revolutionary tool, but your health journey is a marathon, not a sprint. By combining these medications with high protein and resistance training, you aren't just getting smaller - you're getting stronger and ensuring you can enjoy your vitality for decades to come.

Ready to start your journey with expert medical guidance? Start your free consultation with GobyMeds today!

Coming Soon: GobyFit

Be on the look for our free fitness resource coming soon - GobyFit! GobyFit will offer free training programs that are scalable for all skill levels and abilities. Designed by Doctors of Physical Therapy, these programs are created to support individuals ready to take control of their wellness journeys.

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