Do You Need to Exercise on Ozempic? A Dietitian’s Guide to Movement, Muscle, and GLP-1

GLP-1 medications such as semaglutide (Ozempic®, Wegovy®) and tirzepatide (Mounjaro®, Zepbound®) have transformed the treatment landscape for many chronic health conditions. These medications can improve blood sugar management, reduce appetite, and support significant weight loss. 

With such effective medications available, many people wonder: Do I still need to exercise? 

The short answer is yes, but not necessarily for the reason you might think. 

Physical activity remains one of the most powerful tools for supporting overall health while taking a GLP-1 medication. While exercise may contribute modestly to weight loss, its greatest benefits extend far beyond the number on the scale. 

Why Exercise Isn’t About Burning Calories on Ozempic

One of the most common misconceptions about exercise is that its primary purpose is to burn calories. 

In reality, many people taking GLP-1 medications lose weight successfully without following a structured exercise program. These medications are highly effective at reducing calorie intake, which is a major driver of weight loss. 

This doesn’t mean physical activity is unnecessary. Instead, it means we may need to rethink the role exercise plays in our health journey. Physical activity should not be viewed as a punishment for eating or a way to “earn” food. Rather than asking, “How many calories will this burn?” consider asking, “How will this help me feel, function, and live?” 

Why Exercise Still Matters on Ozempic and GLP-1 Medications

The benefits of regular physical activity reach nearly every system in the body. 

Research consistently shows that physical activity can help support: 

• Blood sugar management 
• Heart health 
• Blood pressure 
• Sleep quality 
• Energy levels 
• Mood and mental health 
• Bone health 
• Physical function and mobility 

These benefits occur even when weight loss is minimal or absent. In other words, exercise is valuable because it helps you feel and function better, not simply because it burns calories. 

How to Prevent Muscle Loss on Ozempic: Strength, Function, and Bones

One concern frequently discussed with GLP-1 medications is muscle loss. 

While GLP-1 medications often get the blame, losing some lean mass can occur with any significant weight loss, whether through lifestyle changes, medication, or bariatric surgery. The goal is not necessarily to prevent all muscle loss. Rather, the goal is to preserve as much strength and physical function as possible while improving overall body composition. This distinction matters. 

Strength and physical function are often more meaningful than body composition numbers alone. Being able to climb stairs comfortably, carry groceries, get up from the floor, travel, or play with grandchildren may have a greater impact on daily life than a specific body fat percentage. 

Strength training includes activities that challenge your muscles using dumbbells, kettlebells, barbells, resistance bands, weight machines, or even your own body weight through exercises such as squats, lunges, and push-ups. 

The goal isn’t necessarily to become stronger for the sake of lifting heavier weights. The goal is to maintain the strength needed to support daily activities, independence, and long-term health. 

Strength training also plays an important role in bone health. During weight loss, bone density can decline over time, particularly in older adults. Weight-bearing exercise and strength training help provide the stimulus needed to maintain strong bones and reduce the risk of fractures later in life. 

Research suggests that strength training can help maintain strength and physical function during periods of rapid weight loss. When combined with adequate protein intake, strength training becomes one of the most effective tools for supporting healthy body composition, strength, and long-term health. 

How Much Physical Activity Do You Need? 

Current physical activity guidelines recommend: 

• 150–300 minutes of moderate-intensity aerobic activity each week 
• Muscle-strengthening activities at least two days per week 

At first glance, these recommendations can feel overwhelming. The good news is that health benefits occur long before you reach those targets. One of the most important messages from physical activity research is that all movement counts. 

People who are currently doing the least amount of physical activity often experience the greatest health benefits from relatively small increases in movement. 

How to Start Exercising on Ozempic: Small Steps That Add Up

Many people assume they need to jump straight into a gym routine or dramatically increase their exercise habits. In reality, small and consistent changes are often the most sustainable. 

If you’re currently averaging 5,000 steps per day, consider making your next goal 5,500 steps per day for the next two weeks. Once that feels manageable, increase your goal to 6,000 steps per day. 

Those small increases may not seem like much, but they add up over time and can have meaningful health benefits. Adding a short walk after dinner, taking the stairs more often, parking farther away, walking the dog, gardening, or completing a brief strength-training session at home can all contribute to better health. 

Choose Movement You Actually Enjoy

One of the biggest predictors of long-term success with physical activity is enjoyment. The “best” exercise program is not necessarily the one that burns the most calories. It is the one you can consistently see yourself doing six months from now. 

For some people, that may be strength training at a gym. For others, it may be walking with a friend, dancing, hiking, pickleball, yoga, swimming, or simply spending more time outdoors. Group exercise can provide benefits that extend beyond physical health. Classes often offer accountability, structure, social connection, and a sense of community that can make staying active more enjoyable. 

Consider exploring programs through your local park district, community center, YMCA, senior center, or fitness facility. From water aerobics and yoga to strength training and walking groups, there are often options available for a wide range of fitness levels. 

Finding activities that fit your interests, schedule, and physical abilities can help transform exercise from another task on your to-do list into a sustainable part of your lifestyle. 

The Bottom Line: Movement Matters, Even on GLP-1

GLP-1 medications can be effective tools for managing a variety of health conditions and supporting overall health, but movement still matters. Physical activity is about much more than weight loss. It supports strength, mobility, cardiovascular health, body composition, energy levels, bone health, and quality of life. 

Rather than viewing exercise as a way to burn calories, consider it an investment in your future health, independence, and well-being. A registered dietitian can help you create a realistic nutrition and physical activity plan that aligns with your goals, lifestyle, and health needs while taking a GLP-1 medication. 

References 

Jakicic JM, et al. Physical Activity and Excess Body Weight and Adiposity for Adults: American College of Sports Medicine Consensus Statement. 2024. 

Physical Activity Guidelines Advisory Committee. Physical Activity Guidelines for Americans. 2nd Edition. U.S. Department of Health and Human Services. 2018. 

Creel D. Beyond Diets & Dumbbells: Physical Activity and GLP-1 Medications. Nutrition Counseling Academy Training Program. 

Article by Amelia Discher RD, LDN

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