Cardio or strength training, which is the best workout for weight loss?

Trying to lose weight and getting ‘in shape’ is what we call a lifelong quest. No matter how far we’ve come, there’s always room for ‘betterment’. Because let’s accept it, the goal always shifts, and the journey is endless.

However, if you're new to the fitness circuit and trying to lose weight, you’ve probably wondered: Should I do cardio or strength training? It’s one of the most common questions many people ask when starting a fitness journey.


To tell you the truth, both workouts help burn calories and improve health, but they work in different ways. While cardio is great for burning fat during exercise, strength training helps your body burn more calories even at rest.

So, which one is better for weight loss?

What is cardio exercise?

Cardio, short for cardiovascular exercise, includes activities that increase your heart rate and keep it up for a while. Examples include aerobic exercises like running, swimming, brisk walking, dancing, and biking. Cardio is great for your heart, lungs, and stamina. More importantly for weight loss, cardio burns calories quickly.

When it comes to weight loss, cardio has been the go-to for decades because it burns a lot of calories quickly. Depending on your body weight and speed, a 30-minute cardio session can burn anywhere from 200 to 500 calories. That’s why many people turn to cardio when they want to see quick results on the scale.

What is strength training?

Strength training, also known as resistance training, includes exercises like weight lifting, push-ups, squats, or using resistance bands, or even bodyweight squats and lunges.. The main goal is to build muscle strength and endurance.

While strength training doesn’t burn as many calories during a workout as cardio does, it offers a hidden benefit: it increases your resting metabolic rate (RMR). That means your body continues to burn calories even when you’re not exercising, including while you sleep. That’s because muscles need energy to repair and grow, a process that continues for up to 48 hours after your session. This is called the “afterburn effect” or EPOC (Excess Post-Exercise Oxygen Consumption).

Calories burning, and cardio winning (with a catch)

If we’re only talking about immediate calorie burn, cardio is the winner. For example:

30 mins jogging: ~300-400 calories

30 mins cycling: ~250-600 calories

30 mins swimming: ~200-500 calories

Compare that to:
30 mins moderate weight training: ~90-150 calories

30 mins intense strength circuit: ~180-250 calories

So yes, cardio burns more during the session. But the story doesn’t end there.

Long-term fat loss: Strength training has an edge

Studies show that strength training helps build lean muscle mass, which boosts your resting metabolic rate (RMR), the number of calories your body burns while doing nothing.

More muscle = higher metabolism

Higher metabolism = more fat burned all day

When you lift weights or do resistance training, your body uses energy to repair muscle fibers. This repair process can last for up to 48 hours after your workout. This is known as the afterburn effect, or EPOC (Excess Post-exercise Oxygen Consumption). That means you're still burning calories long after your session is over.

Plus, muscle burns more calories than fat. So the more muscle you have, the more calories you burn all day long, even at rest.

For example, someone with more muscle may burn an extra 100-200 calories per day just by sitting around. Over time, that adds up!

Also, strength training helps prevent muscle loss during dieting, ensuring that the weight you lose is mostly fat, not muscle.

What does science say?

Recent studies suggest that combining both cardio and strength training gives the best results for fat loss.

A 2021 study published in the Obesity journal found that people who did both cardio and weights lost more fat and gained more muscle than those who did only one type of exercise.

Another study from Harvard School of Public Health showed that men who did 20 minutes of strength training daily had less belly fat over time compared to those who only did cardio.

So the science supports a balanced approach.

What about a blended HIIT?

High-Intensity Interval Training (HIIT) combines the benefits of cardio and strength in a short, powerful workout. HIIT usually includes short bursts of intense activity (like jumping jacks, burpees, or squats) followed by brief rest.

Time-efficient: 20–30 minutes is enough.

High calorie burn: You burn calories during and after the workout.

Builds muscle + burns fat: A perfect combo.

If you’re short on time or easily bored, HIIT could be your best option.

For example, go for:

30 seconds sprint, 30 seconds walk (repeat)

1 min jump squats, 1 min push-ups, 1 min rest

HIIT burns a lot of calories fast and boosts your metabolism long after the workout ends. That’s why many people find it time-efficient and effective for fat loss.

The best strategy for beginners

If you're just starting out, cardio can feel easier because it's more familiar (walking, cycling). But don't be afraid to try strength training. Start with bodyweight exercises or light weights, and focus on good form. Plus, you don’t need a gym! Many strength workouts can be done at home with zero equipment.

Sample weekly plan:
Monday: 30 minutes brisk walking (cardio)

Tuesday: Full-body strength workout (20–30 minutes)

Wednesday: Rest or light yoga

Thursday: HIIT workout (20 minutes)

Friday: Strength training (lower body)

Saturday: Jog or cycle for 30 minutes

Sunday: Rest or gentle stretching

This balanced approach gives you cardio benefits while building muscle for long-term fat burning.


Ultimately, the magic lies in the balance act. You don’t have to choose just one. The key to success is consistency, balance, and fun. No matter where you start, the best workout is the one you’ll enjoy and stick with. Make it fun, stay consistent, eat well, and you’ll see results that last. Whether you're walking, lifting, or dancing, every movement brings you closer to your goals. That’s the real secret to losing weight and keeping it off, no matter which workout you prefer.

Disclaimer: This article is for informational purposes only and should not be taken as medical or fitness advice. Always consult a certified fitness professional or healthcare provider before starting any new workout or weight loss program, especially if you have any underlying health conditions or concerns. Individual results may vary based on age, body type, medical history, and lifestyle.