Running burns more calories per session and strips more fat in the short term, but lifting builds muscle that keeps your metabolism higher over time. For pure weight loss on a scale, running wins. For losing fat while keeping (or building) a lean body, lifting pulls ahead. Doing both is the best strategy overall.
Calorie Burn During Exercise
Running has a clear advantage in calories burned per hour. A moderate-to-vigorous run torches roughly 500 to 1,000 calories per hour depending on your pace, weight, and terrain. Weightlifting burns considerably less during the actual session, typically in the range of 200 to 400 calories per hour, because the muscles work in short bursts with rest periods in between.
That gap matters if your primary goal is creating a calorie deficit. Minute for minute, running is the more efficient calorie burner while you’re doing it. But what happens after you stop exercising tells a different story.
The Afterburn Effect
Both running and lifting elevate your metabolism after you finish, a phenomenon called excess post-exercise oxygen consumption. Your body continues burning extra calories as it repairs tissue, restores fuel stores, and returns to its resting state. A study in the International Journal of Exercise Science found that both resistance training and high-intensity interval cardio raised energy expenditure for up to 14 hours afterward, with each producing at least 168 additional calories burned beyond the workout itself.
The surprise here is that lifting matched high-intensity cardio almost exactly in post-exercise calorie burn. So while a steady jog burns more during the run, a hard lifting session can narrow that gap over the full day. If you’re comparing a casual jog to a challenging strength workout, the 24-hour calorie totals may be closer than you’d expect.
What Kind of Weight You Actually Lose
This is where the distinction between “weight loss” and “fat loss” becomes important. A large trial at Duke University compared aerobic training, resistance training, and a combination of both in overweight adults. The aerobic group lost significantly more total body weight and fat mass than the resistance group. Specifically, the aerobic group dropped 1.66 kg of fat on average, while the resistance group lost just 0.26 kg of fat.
But the resistance group gained 1.09 kg of lean body mass. The aerobic group actually lost a small amount of muscle. Here’s what’s interesting: the lifters saw their body fat percentage drop even though they barely lost any fat at all. The added muscle changed the ratio. If you only watch the number on the scale, running looks like the clear winner. If you care about what your body is made of, lifting reshapes the picture.
The combination group got the best of both worlds: fat loss comparable to running alone, plus muscle gains comparable to lifting alone.
Muscle, Metabolism, and the Long Game
You’ve probably heard that muscle “burns more calories at rest.” That’s true, but the effect is smaller than most fitness marketing suggests. One pound of muscle burns roughly 5 to 7 calories per day at rest. One pound of fat burns far less, contributing only about 5% of total daily energy expenditure compared to muscle’s 20%. Adding five pounds of muscle might raise your resting metabolism by 25 to 35 calories per day.
That sounds modest, and it is on a daily basis. But it compounds over months and years. More importantly, people with more muscle tend to burn more total calories during all physical activity, not just at rest. Carrying extra lean mass makes every walk, stair climb, and workout slightly more metabolically expensive. Over the course of a year, those small differences add up to meaningful protection against weight regain.
Visceral Fat and Metabolic Health
Not all body fat carries the same health risk. Visceral fat, the deep abdominal fat that wraps around your organs, is strongly linked to heart disease, insulin resistance, and metabolic syndrome. Aerobic exercise like running is significantly more effective at reducing visceral fat than resistance training. In a study from the STRRIDE AT/RT trial, aerobic training reduced visceral fat, liver fat, and insulin resistance, while resistance training alone only lowered subcutaneous (under-the-skin) abdominal fat without significantly improving those deeper metabolic markers.
Adding resistance training on top of aerobic exercise didn’t produce additional visceral fat loss beyond what aerobic training achieved alone. So if reducing metabolic risk from deep belly fat is a priority, running or other cardio should be part of your plan.
How Each Affects Your Appetite
Exercise doesn’t just burn calories. It also changes how hungry you feel afterward, which directly impacts whether you eat back what you burned. A crossover study in healthy men found that both aerobic and resistance exercise suppressed hunger and lowered ghrelin, the hormone that drives appetite, during and shortly after the workout. But aerobic exercise had an additional edge: it significantly raised levels of PYY, a hormone that promotes feelings of fullness. The aerobic trial produced PYY levels roughly 25% higher than the resistance or control trials over eight hours.
This doesn’t mean lifting makes you hungrier. Both types of exercise suppressed appetite compared to doing nothing. But running may give you a slightly stronger buffer against overeating in the hours after your workout.
Why Combining Both Works Best
Research on concurrent training, doing both cardio and resistance work in the same program, consistently shows it outperforms either mode alone for body composition. A study on concurrent training found it promoted greater fat loss and body mass reduction than either high-intensity cardio or resistance training performed separately. The added lean mass from lifting supports energy metabolism and produces anti-inflammatory signals that further improve metabolic health.
The World Health Organization recommends at least 150 minutes of moderate-intensity aerobic activity per week, plus muscle-strengthening activities. That lines up well with the research: a few runs and a few lifting sessions per week covers both the acute calorie burn and the long-term body composition benefits.
A practical split might look like three days of running (or other cardio) and two to three days of resistance training. You don’t need to do both in the same session, though you can. The key is that the cardio drives the calorie deficit and visceral fat reduction, while the lifting preserves muscle, improves your body’s shape, and protects your metabolism from slowing down as you lose weight.
Picking What You’ll Actually Stick With
None of this matters if you quit after three weeks. In a randomized trial comparing aerobic, resistance, and combined training, 96% of participants completed the eight-week program across all groups, with attendance rates above 92%. That’s a controlled study with built-in accountability, though. In real life, adherence depends almost entirely on whether you enjoy the exercise and can fit it into your schedule.
If you love running but dread the weight room, a running-focused plan with some bodyweight strength work will serve you better than a “perfect” program you abandon. If you hate cardio but look forward to lifting, the muscle you build will still shift your body composition in a meaningful direction, even if the scale moves more slowly. The best exercise for weight loss is the one you do consistently for months, not just weeks.