If you're taking a GLP-1 receptor agonist medication like Ozempic, Wegovy, or Zepbound, pairing it with the right exercise routine is critical to prevent muscle loss during weight loss. Nearly one in five American adults has taken this type of drug at some point, and one in eight are currently on it, according to a November 2025 poll by the Kaiser Family Foundation (KFF Health) . While these medications are highly effective for weight loss and managing type 2 diabetes, they work best when combined with specific lifestyle habits, particularly regular physical activity.

Why Does Muscle Loss Happen on GLP-1 Medications?

When you lose weight through any method, whether medication, surgery, or diet and exercise, your body doesn't lose weight evenly. Some weight comes from fat, but some also comes from muscle and bone mass . This becomes especially concerning for people on GLP-1s because the rapid weight loss these drugs produce can accelerate muscle loss if you're not intentional about preserving it.

The risk is particularly acute for women, who already face increased risk of low muscle and bone mass in middle age and later life due to hormonal changes during perimenopause and menopause . If you lose too much muscle and bone mass, you face increased risk of developing conditions such as sarcopenia (low muscle mass and frailty), osteopenia (low bone density), and osteoporosis (weak, brittle bones) later in life.

"Essentially, they are a tool," said Dr. Yuval Pinto, an obesity medicine specialist with Johns Hopkins Healthful Eating, Activity, and Weight Program. "About 98% of my patients are on GLP-1s, and I emphasize to all of them the importance of pairing the drug with certain lifestyle habits to maximize the benefits."

Dr. Yuval Pinto, Obesity Medicine Specialist at Johns Hopkins Healthful Eating, Activity, and Weight Program

What's the Science Behind Exercise and Muscle Preservation?

The good news is that strength training can combat muscle loss effectively. When combined with proper nutrition and sleep, strength training helps preserve and even increase bone and muscle mass during weight loss . Think of it this way: taking GLP-1s facilitates weight loss, but pairing the drug with exercise tells your body where the weight loss comes from.

"Strength training tells the body to keep muscle," explained Kelyssa Hall, an exercise physiologist and certified strength and conditioning specialist at Hospital for Special Surgery.

Kelyssa Hall, Exercise Physiologist and Certified Strength and Conditioning Specialist at Hospital for Special Surgery

Beyond muscle preservation, strength training also maintains your resting metabolic rate (how much energy you burn at rest), promotes stability throughout your joints, and can help lower injury risk in day-to-day life . Flexibility work is equally important because when you lose weight, your movement mechanics can change. Flexibility training keeps your joints and muscles moving through their full range of motion, which helps you lift weights with safe, effective form and reduces the risk of injury.

How to Build Your GLP-1 Exercise Plan

Experts recommend a balanced approach that combines multiple types of movement. Here's what exercise physiologists typically suggest for people taking GLP-1s, based on American College of Sports Medicine guidelines:

• Strength Training: Aim for 2 to 4 sessions per week, using 8 to 10 exercises that strengthen the entire body. Do each exercise for 3 sets of 8 to 12 repetitions, starting with light weight and progressing to moderate load once you've mastered good form. On a scale of 0 to 10 effort, pick a weight that makes the prescribed rep count feel like a 5 or 6, then progress to 7 or 8 as it becomes easier .
• Flexibility Training: Incorporate flexibility work at least three times per week through stretching, yoga flows, foam rolling, and devices like massage guns, balls, and sticks. This is especially important when strength training in a caloric deficit, as muscles can get stiff or overworked, leading to compensations and injury .
• Cardiovascular Exercise: Strive for at least 150 minutes per week at moderate intensity (30 minutes, 5 days per week) OR at least 75 minutes per week at vigorous intensity (25 minutes, 3 days per week). Cardio can be anything that raises your heart rate and breathing, including brisk walking, jogging, hiking, swimming, running, dancing, or high-intensity interval training (HIIT) .
• Daily Movement (NEAT): Aim to move consistently throughout the day, striving for 7,000 to 10,000 steps daily. Non-Exercise Activity Thermogenesis (NEAT) includes low-intensity tasks like walking your dog, cleaning the house, taking the stairs, and parking farther away to get more steps in. NEAT actually accounts for a higher percentage of your daily energy expenditure than structured exercise .

The specific plan should be tailored to your individual circumstances. As Dr. Pinto noted, he wouldn't give the same exercise plan to an 88-year-old woman losing weight slowly compared with a younger person who goes to the gym three times a week . Always check with your doctor before starting a new exercise program to ensure it's safe and appropriate for your health status.

Why Daily Movement Matters More Than You Think

One often-overlooked component is consistent movement throughout the day. Excessive fatigue is a common side effect of GLP-1s, so incorporating walking into your daily routine can help maintain energy levels . Additionally, when you emphasize NEAT while on a GLP-1, you increase your chances of healthy weight loss and establish movement as an integral part of your day, which benefits your long-term health.

The bottom line: GLP-1 medications are powerful tools for weight loss and managing chronic disease, but they work best when paired with intentional exercise that preserves muscle, maintains bone density, and supports overall metabolic health. The combination of strength training, flexibility work, cardiovascular exercise, and daily movement creates a comprehensive approach that maximizes the benefits of these medications while minimizing the risk of muscle loss and related complications.