Strength Training vs Cardio. Which is Better? | Regarding fitness, one of the most debated topics is whether strength training or cardio is the better choice. Some fitness enthusiasts swear by the benefits of weightlifting, while others are firm believers in the power of cardiovascular workouts. But which one is truly better? The answer depends on your fitness goals, lifestyle, and personal preferences.
This article will compare strength training and cardio based on various factors, including weight loss, muscle gain, heart health, and overall well-being.
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Strength Training vs Cardio: Which is Better?

Understanding Strength Training and Cardio
Before diving into the comparison, it’s essential to understand what strength training and cardio entail.
What is Strength Training?
Strength training, also known as resistance training or weightlifting, involves using resistance to build muscle strength and endurance. This can be done using free weights, resistance bands, weight machines, or bodyweight exercises such as push-ups and squats. Strength training focuses on improving muscle mass, strength, and metabolic efficiency.
What is Cardio?
Cardiovascular exercise, or cardio, is any workout that increases your heart rate and improves your heart and lung function. Typical forms of cardio include running, cycling, swimming, rowing, and aerobic workouts like jumping rope or dancing. The primary goal of cardio is to enhance cardiovascular endurance, burn calories, and improve overall stamina.
Strength Training vs. Cardio: A Comparison
1. Weight Loss and Fat Burning
One primary reason people exercise is to lose weight and burn fat. So, which is more effective for weight loss?
- Cardio for Weight Loss: Cardio workouts typically burn more calories per session than strength training. Running, cycling, and swimming can burn significant calories, leading to quicker weight loss. High-intensity interval training (HIIT), a type of cardio, is efficient for fat loss due to its afterburn effect (excess post-exercise oxygen consumption, or EPOC), which keeps the body burning calories even after the workout.
- Strength Training for Weight Loss: Strength training does not burn as many calories during the workout as cardio but plays a crucial role in long-term fat loss. Muscle tissue burns more calories at rest than fat tissue, meaning the more muscle you have, the higher your resting metabolic rate (RMR). Over time, this helps you burn more calories throughout the day, even when you’re not working out.
Winner: Combining both is ideal for optimal fat loss and body composition.
2. Muscle Gain and Toning
Strength training is the clear winner if you aim to build muscle and achieve a toned physique.
- Strength Training: Lifting weights or using resistance builds muscle mass and strength. It also helps shape and define your body, giving you a toned and sculpted look. Progressive overload (gradually increasing weights or resistance) is essential for muscle growth.
- Cardio: While cardio can help with fat loss, it does not significantly contribute to muscle gain. Excessive cardio without strength training can lead to muscle loss over time, making it harder to achieve a toned appearance.
Winner: Strength training.
3. Heart Health and Endurance
Both strength training and cardio can improve heart health, but cardio has a slight edge in this category.
- Cardio: Regular cardio workouts strengthen the heart, improve circulation, and reduce the risk of heart disease. It also helps lower blood pressure, cholesterol levels, and the risk of stroke.
- Strength Training: While not traditionally associated with cardiovascular benefits, strength training can also improve heart health. Studies show that resistance training helps lower blood pressure and improves cardiovascular function. However, it is less effective than cardio in boosting heart and lung endurance.
Winner: Cardio.
4. Metabolism and Caloric Burn
Boosting metabolism is crucial for weight management and overall energy levels.
- Cardio: Burns a high number of calories during the workout but has a limited afterburn effect (except for HIIT, which can prolong calorie burning post-exercise).
- Strength Training: While it burns fewer calories during the workout, it increases muscle mass, leading to a higher resting metabolic rate. This means you’ll burn more calories even at rest.
Winner: Strength training for long-term metabolism boost; cardio for immediate calorie burn.
5. Bone and Joint Health
As we age, maintaining strong bones and joints becomes increasingly essential.
- Strength Training: Increases bone density and reduces the risk of osteoporosis. Weight-bearing exercises stimulate bone growth and enhance joint stability.
- Cardio: Some forms of cardio, such as running, can be high-impact and may stress the joints over time. However, low-impact cardio, like swimming and cycling, is excellent for joint health.
Winner: Strength training for bone health; low-impact cardio for joint-friendly options.
6. Mental Health and Stress Relief
Both strength training and cardio offer mental health benefits but in different ways.
- Cardio: Releases endorphins (feel-good hormones) that help reduce stress, anxiety, and depression. Activities like running and swimming are particularly effective in boosting mood.
- Strength Training: Improves confidence, self-esteem, and mental resilience. Lifting weights has been linked to reduced symptoms of anxiety and depression.
Winner: Both, depending on personal preference.
7. Time Efficiency
Many people struggle to find time for long workouts, so efficiency matters.
- Cardio: This can be time-consuming, especially steady-state cardio (e.g., long-distance running). HIIT is a faster alternative that provides benefits in shorter sessions.
- Strength Training: Workouts can be structured to be highly efficient. Compound exercises (e.g., squats, deadlifts) work multiple muscle groups simultaneously, reducing the need for long sessions.
Winner: Strength training for shorter, more effective workouts; HIIT for quick cardio sessions.
The Best Approach: Combining Strength Training and Cardio
While both forms of exercise have their advantages, the best approach is to incorporate both into your fitness routine. Here’s why:
- Strength training helps build muscle, boost metabolism, and improve bone health.
- Cardio enhances heart health, burns calories, and improves endurance.
- A combination provides a well-rounded fitness plan that maximizes overall health benefits.
How to Balance Both in Your Routine
- For Weight Loss, Combine strength training (3-4 days a week) with cardio (2-3 days a week). For time efficiency, consider HIIT.
- For Muscle Gain: Prioritize strength training (4-5 days a week) and add low-intensity cardio (1-2 days a week) for heart health.
- For General Fitness: Aim for a balanced mix of both, such as strength training three days a week and cardio two days a week.
Final Verdict
Neither strength training nor cardio is inherently better than the other; it all depends on your goals. If you want to build muscle and boost metabolism, prioritize strength training. If you aim for heart health and endurance, focus on cardio. However, incorporating both into your fitness routine will provide the most significant benefits for the best overall results for the best overall results.
By understanding each exercise’s unique advantages, you can create a workout plan that aligns with your fitness goals and leads to a healthier, more muscular, and more balanced body.
FAQ
Can I do both strength training and cardio on the same day?
Yes, you can combine both in a single workout session. However, if your goal is muscle gain, prioritize strength training first, then follow with cardio. If your goal is endurance, do cardio first.
How many times a week should I do strength training vs. cardio?
Aim for at least 3-4 days of strength training and 2-3 days of cardio per week for general fitness. The balance depends on your fitness goals.
Does strength training help with weight loss as much as cardio?
While cardio burns more calories in a single session, strength training helps build muscle, which boosts your resting metabolic rate and leads to long-term fat loss.
Can too much cardio burn muscle?
Excessive cardio without proper nutrition and strength training can lead to muscle loss. Balance your workouts and ensure adequate protein intake.
Which is better for heart health: strength training or cardio?
Cardio is superior for heart health, but strength training also provides cardiovascular benefits and can help lower blood pressure.
Can I do strength training if I have joint pain?
Yes, but opt for low-impact exercises like resistance bands or machines, and avoid high-impact movements that may stress your joints.
References
- https://www.healthline.com/nutrition/cardio-vs-weights-for-weight-loss
- https://www.onepeloton.com/blog/cardio-strength-training-peloton/