Many people trying to lose weight skip the weights and spend all their gym time on the treadmill. That is a missed opportunity. Strength training does not burn a huge number of calories, but it changes what kind of weight you lose — and that matters for how you look, how strong you are and how well you keep the weight off.
How many calories does strength training burn?
Estimates for a 70 kg person, above resting, using Compendium MET values:
| 45-minute session | Calories burned |
|---|---|
| Moderate weight training | ≈ 130 kcal |
| Hard weight training or circuits | ≈ 260 kcal |
| Brisk walking (5.6 km/h) | ≈ 175 kcal |
| Jogging (8 km/h) | ≈ 380 kcal |
So lifting burns about as much as walking, and less than running. If burning calories were the only goal, it would not be the best choice.
Why strength training still matters for fat loss
It protects your muscle
When you eat less, your body breaks down some muscle as well as fat. Research reviews consistently find that resistance training — together with enough protein — greatly reduces that muscle loss. Keeping muscle means the weight you lose is mostly fat, so you end up leaner rather than just smaller.
It keeps you strong and functional
Dieting without lifting often leaves people weaker and more tired. Lifting keeps strength up, which makes daily life, sport and future training easier.
The metabolism boost is small
A kilogram of muscle burns about 13 kcal a day at rest. Gaining 2 kg of muscle adds about 25 kcal a day — helpful, but not a reason to expect lifting to melt fat on its own.
Weights vs cardio: what the research shows
In the STRRIDE trial, overweight adults did aerobic training, resistance training or both for eight months. Aerobic training lost the most fat and body weight. Resistance training increased lean mass. The combined group got the best of both — fat loss plus muscle gain. The takeaway: use walking or cardio to add to your calorie burn, and weights to keep muscle.
A simple 3-day fat-loss strength plan
Train three non-consecutive days a week, alternating workouts A and B. Do 2–3 sets of each exercise and stop each set with 1–3 reps left in the tank.
| Workout A | Sets × reps | Workout B | Sets × reps |
|---|---|---|---|
| Squat (or goblet squat) | 3 × 8–12 | Walking lunge | 3 × 10 each leg |
| Push-ups (or bench press) | 3 × 8–12 | Lat pulldown | 3 × 10–12 |
| Seated cable row | 3 × 10–12 | Dumbbell shoulder press | 3 × 10–12 |
| Romanian deadlift | 2 × 10 | Leg curl | 2 × 12 |
| Plank | 3 × 30–45 s | Dead bug | 3 × 8 each side |
Add a little weight or a rep each week when you can — that is progressive overload, and it is what keeps muscle while you diet. For a fuller version with warm-ups and progressions, see the beginner 3-day gym workout plan.
A sample fat-loss week
| Day | Training |
|---|---|
| Monday | Workout A |
| Tuesday | 30–45 minute walk |
| Wednesday | Workout B |
| Thursday | 30–45 minute walk |
| Friday | Workout A |
| Saturday | Longer walk, sport or a cardio session |
| Sunday | Rest or easy walk |
Aim for 7,000–10,000 steps on most days as well — see how many steps a day to lose weight. More training days can work, as covered in how many days a week to work out.
Get the diet side right
- Moderate deficit: eat about 10–20% below maintenance; very aggressive cuts cost more muscle. Start with what a calorie deficit is.
- Enough protein: about 1.6 g per kg of body weight a day while dieting and lifting. See protein for weight loss.
- Sleep: 7–9 hours helps recovery and appetite control.
Track your waist and strength as well as body weight — beginners can lose fat and gain a little muscle at the same time, which makes the scale move slowly. Fat loss is also never targeted to one area; see how to lose belly fat.
Next step: Set a sustainable fat-loss target with the calorie deficit calculator.
Explore the guide: Calories, protein, training and habits all come together in the weight loss guide; calories in everyday Indian foods are in the calories guide.
Key takeaways
- Strength training burns about as much as walking — its main job is protecting muscle.
- Combine weights 2–4 days a week with daily walking and a moderate calorie deficit.
- Use 2–3 sets of 6–15 reps, adding weight or reps over time.
- Eat about 1.6 g protein per kg and judge progress by waist and strength, not just the scale.
This is educational information, not medical advice. Consult a qualified professional for personal health decisions.
