Wearing weights during everyday activities or exercise does burn more calories, but the effect is modest. Walking with a weighted vest at 15% of your body weight increases energy expenditure by about 12% compared to walking without one. That translates to roughly 25 to 40 extra calories per 30-minute walk, depending on your pace and body size. Over weeks and months, those calories can add up, but wearing weights alone is unlikely to produce dramatic weight loss.
How Much Extra Do You Actually Burn?
Your body burns more energy whenever it has to move more mass. That’s the simple physics behind weighted vests, ankle weights, and wrist weights. Research from the American College of Sports Medicine found that healthy adults walking at 3.0 mph while wearing a vest equal to 20% of their body weight burned about 13% more calories than walking unloaded. A lighter vest (15% of body weight) at a slightly slower pace produced a similar 12% bump.
To put that in real numbers: if a 170-pound person burns around 200 calories on a 30-minute brisk walk, a weighted vest might push that to roughly 224 to 226 calories. That’s an extra 26 calories per session. Walk five days a week, and you’re looking at about 130 extra calories burned per week, or roughly 6,800 extra calories over a year. Since a pound of fat stores about 3,500 calories, that pace alone could account for about two extra pounds of fat loss over 12 months, assuming nothing else changes.
Adding an incline makes a bigger difference. Walking on a 5% to 10% treadmill grade while wearing a vest at just 10% of body weight produced that same 13% calorie boost, and participants in the study reported actually enjoying the workout more than heavier vest loads on flat ground.
Weighted Vests vs. Ankle and Wrist Weights
Weighted vests distribute load across your torso, which keeps your natural walking or running form mostly intact. Ankle and wrist weights work differently. They attach to your limbs, and because your arms and legs swing with every step, even a small amount of weight forces your muscles to work harder through a wider range of motion.
Research on treadmill running found that energy expenditure and heart rate both increased as a linear function of the weight added to ankles or wrists. In other words, the heavier the weight, the more calories you burn, in a predictable, proportional way. Ankle weights produced a bigger metabolic response than the same weight on the wrists, likely because your legs are already doing more work during walking and running.
That sounds like a win for ankle weights, but there’s a significant tradeoff in joint stress, which we’ll get to below.
Effects on Muscle and Body Composition
One reason people try weighted exercise during a calorie deficit is the hope of preserving muscle while losing fat. A five-month trial studied older adults with obesity who wore weighted vests during their normal daily activities while following a calorie-restricted diet. Both the vest group and the diet-only group lost a similar amount of total weight (about 11 kilograms, or 24 pounds). Both groups also lost roughly the same proportion of lean mass, about one-quarter of the total weight lost.
So the vest didn’t help people hold onto more muscle tissue. However, the researchers noted a potential benefit for muscle strength and quality that was independent of muscle size. Carrying extra load throughout the day may help your muscles maintain their functional capacity even as you lose weight, which matters for balance, mobility, and everyday tasks. Still, if preserving muscle mass during weight loss is your primary goal, resistance training with progressive overload (gradually lifting heavier weights) has a much stronger evidence base than wearing a weighted vest around the house.
Cardiovascular Effects to Know About
Wearing a weighted vest doesn’t just affect your muscles and calorie burn. It also raises your blood pressure. A study published in Hypertension Research found that putting on an external weight vest caused an immediate increase in both resting and exercise blood pressure, regardless of a person’s body weight or body fat percentage. Resting blood pressure in the study rose to an average of 136/91 mmHg while wearing the vest.
For a healthy person doing short bouts of exercise, a temporary blood pressure increase is normal and not inherently dangerous. But if you have high blood pressure, heart disease, or other cardiovascular conditions, adding external load could push your cardiovascular system harder than intended. This is worth discussing with your doctor before strapping on a vest for daily wear.
Joint Risks With Ankle and Wrist Weights
Ankle weights change the way you walk. Even a few pounds strapped to your lower legs can alter your gait mechanics, putting extra strain on your ankle joints, knees, hips, and lower back. The risk isn’t from a single session but from repeated use over time, especially during high-impact activities like running or climbing stairs.
Wrist weights carry a similar concern for the shoulders and elbows, though the forces involved are generally lower because your arms move less mass overall. If you already have joint pain or a history of knee or hip problems, ankle weights during walking or running can aggravate those issues. Using them only during seated or controlled exercises (like leg lifts) rather than dynamic activities reduces the risk considerably.
How to Use Weights Safely
UCLA Health recommends starting with a vest that weighs about 5% of your body weight. For a 150-pound person, that means a vest no heavier than 7.5 pounds. Once that feels comfortable after a few weeks, you can gradually increase the load. Most exercise scientists suggest capping the weight at 10% to 15% of body weight for walking and staying at the lower end if you’re adding incline or picking up pace.
A few practical guidelines that reduce injury risk:
- Choose a vest over ankle weights for walking. Vests keep the load centered over your hips and spine, which preserves your natural gait far better than limb-mounted weights.
- Skip weighted accessories during running. The added impact forces multiply with every stride and disproportionately stress your knees and Achilles tendons.
- Increase load slowly. Adding too much weight too quickly is the fastest route to a strain or overuse injury. A good rule is to increase by no more than 2 to 3 pounds per week.
- Pay attention to your form. If you notice yourself leaning forward, shortening your stride, or compensating in any way, the weight is too heavy.
The Bottom Line on Weight Loss
Wearing weights makes your body work harder, and harder work burns more calories. But the extra burn is in the range of 10% to 13%, not 50%. For someone who already walks regularly and wants a slight intensity boost without changing their routine, a weighted vest is a reasonable tool. It won’t replace a calorie deficit, and it won’t substitute for strength training, but it can nudge your energy expenditure upward in a way that compounds over months.
Where weights genuinely shine is in making low-intensity activities like walking feel more like moderate exercise, which can be useful if you’re limited by time or mobility and can’t easily add a separate gym session. Just keep the load modest, build up gradually, and prioritize a vest over ankle or wrist weights if your goal is sustainable daily use.