Does Cardio Help You Lose Weight?

For anyone starting a weight loss journey, cardio is often the first type of exercise that comes to mind. We’ve all been told that running, cycling, or spending time on the elliptical machine is the best way to “burn off” extra calories. Most people figure that if you sweat more, you’ll weigh less.

In the complex equation of sustainable weight management, where does cardio fit in? Is it the ultimate solution, or just one piece of a larger puzzle?

Understanding the role of cardiovascular fitness is essential not just for losing weight, but for keeping the weight off and living an all-around healthy lifestyle. 

The Answer Is…

Yes, cardio helps you lose weight. 

Here’s the science: cardiovascular exercise is a highly efficient way to burn calories. By engaging large muscle groups in continuous rhythmic motion, your body expends a significant amount of energy to fuel the activity, directly contributing to the calorie deficit required for weight loss. 

However, when it comes to the effectiveness of cardio, remember that it’s a tool. Cardio on its 

own is rarely sufficient for meaningful and sustainable weight loss. You need to use it in tandem with other tools like proper nutrition and strength training to maximize results. Strength training helps to preserve and build muscle mass, while proper nutrition ensures that your body has the nutrients it needs to maintain lean tissue. When cardio is used in isolation, it can lead to muscle loss, metabolic slowdown, or even weight gain over time. That’s why successful, sustainable weight loss typically includes a combination of those three tools. 

How Cardio Works for Weight Loss

Your body requires a certain amount of energy (calories) each day to function, which is called your Basal Metabolic Rate. When you perform cardio, your body taps into stored energy (mainly carbohydrates and fat) to fuel the activity. When you consume fewer calories than you burn (caloric deficit), your body must make up the difference. During a cardio session, your heart rate increases, pushing oxygenated blood to working muscles. Because cardio boosts your body’s energy output, it can contribute to the calorie deficit that’s needed for weight loss.  The harder and longer you work, the more significant calorie burn. 

Consistent cardio also improves your cardiovascular fitness, which makes every activity easier. This is because cardio strengthens your heart and lungs. In addition, cardio also improves blood flow and enhances insulin sensitivity, which both contribute to a healthier metabolism and overall well-being, making it easier to stay active for longer periods of time. 

How Much and What Type of Cardio is Best?

Not all cardio delivers the same results, and not everyone responds to cardio in the same way. The best type of cardio depends on your current fitness level, goals, and schedule. To help maintain weight loss, it’s recommended that you do 150 minutes of cardio per week . However, this varies depending on which type of cardio you choose to do. High intensity cardio sessions should be limited to 2-3 times per week to avoid injury.

To get the most out of your time and effort, it’s important to understand the two main styles of cardio:

LISS (Low-Intensity Steady State)

LISS involves continuous, steady-paced activity for a moderate to long duration (30 to 60 minutes). Activities like brisk walking, light cycling, or swimming all place less stress on the joints and nervous system, making them a great option for beginners. LISS cardio is a good way to build endurance and is also a great option for a recovery workout after intense training days. Even though the calorie burn per minute may be lower compared to more intense workouts, LISS is highly effective when done consistently; it’s easy to recover from which can allow more frequent activity sessions. 

H3: HIIT (High-Intensity Interval Training)

On the other hand, HIIT involves alternating between short, intense bursts of high effort activity and brief recovery periods. HIIT sessions usually range from 15 to 30 minutes. For example, you might sprint for 30 seconds and then walk for one minute, and repeat for the entire workout. This format creates a powerful metabolic demand and burns more calories in less time. HIIT also offers a small afterburn effect, meaning that your body continues to burn calories even after the workout ends.  

The Perfect Trio: Cardio, Strength Training & Diet

As mentioned before, in order for cardio to be effective for weight loss, it needs to be paired with a well-rounded approach that includes strength training and proper nutrition. 

Integrate Strength Training for Metabolic Health

While cardio is great for burning calories, strength training is essential for increasing your body’s baseline calorie needs. Muscle is more metabolically active, meaning it burns more calories at rest than fat tissue. During a calorie deficit, your body can break down muscle for energy; strength training signals your body to retain and even build muscle. The more muscle you have, the higher your Basal Metabolic Rate, which means your body is more efficient at burning calories. It’s recommended that you do 2 to 3 full body strength training sessions per week. Remember to not skip them in favor of more cardio!

The Importance of Prioritizing Nutrition

No amount of cardio can outrun a poor diet. The food you consume dictates the size and quality of your calorie deficit. A moderate calorie deficit, usually 10-20% below your maintenance level, is enough to promote fat loss without compromising energy or muscle loss. Use your cardio to support a sustainable calorie deficit rather than try to create one solely through exercise. Focus on prioritizing protein to support recovery and protect lean muscle mass during weight loss. Pair this with plenty of fiber-rich vegetables, whole grains, and healthy fats, and you’ve got a sustainable foundation for progress.

Final Thoughts

Even though cardio helps you lose weight, remember that it’s not the whole story. Cardio plays a supportive role in a broader, more comprehensive strategy that also includes strength training and nutrition. Whether you prefer brisk walks or intense intervals, the key is finding out what works for your body and your lifestyle. Most importantly, find a form of cardio that you enjoy. When your workout is enjoyable, it makes a world of difference. Commit to consistency, balance your training, and fuel your body with purpose; that’s how real, lasting results are achieved. 

If you’re ready to start your weight-loss journey, talk with one of our specialists about whether our bariatric procedure could be the right first step. Contact us now!