Over the past few months, I’ve noticed more and more people walking outside wearing weighted vests. It’s no surprise—many social media influencers and podcasters are promoting the supposed benefits. Claims range from improved bone density and increased muscle mass to better posture and higher calorie burn.
Naturally, I wanted to dig into the research to see which of these claims are supported by evidence and which are more hype than fact. After being in this industry for a long time, I can tell you that research findings are often exaggerated or misrepresented in the media. So, it didn’t shock me to discover that some of these claims don’t hold up.
Let’s go through them one by one.
Improves Bone Density
This claim hasn’t been proven. A commonly cited study by Snow et al. looked at 18 postmenopausal women. Nine women wore weighted vests while performing a series of jumping exercises, while the other nine (the control group) didn’t exercise at all. After five years, the intervention group showed better hip bone mineral density (BMD). But here’s the catch: the study didn’t isolate whether the benefits came from the jumping exercises, the weighted vest, or the combination. And we already know high-impact exercise, like jumping, benefits bone health. Nowhere in this study did they test walking with a weighted vest.
Another small study looked at whether weighted vests could reduce bone loss during rapid weight loss. Participants wore vests daily at 15% of their body weight, working up to 10 hours a day. The results showed slightly less bone loss compared to the diet-only group. But most people don’t wear vests that long—or that heavy—so the findings don’t translate well to everyday walking.
The strongest evidence for bone density still comes from high-impact exercise and heavy resistance training—things like running, tennis, jumping, and compound lifts (deadlifts, overhead presses, squats). One study, for example, showed benefits when participants trained at 80% of their one-rep max for 5 sets of 5.
Increases Muscle Mass
I couldn’t find a single study showing that walking with a weighted vest builds muscle. The closest example was a study comparing two resistance training groups: one used weighted vests during workouts, and the other relied on bodyweight alone. After 8 weeks, the vest group saw a significant increase in muscle mass (+7.5%). That makes sense—more resistance means more stimulus for muscle growth.
But again, that was resistance training, not walking. Suggesting that walking in a weighted vest will grow muscle is misleading. My concern is that people might swap strength training for weighted walks, which won’t deliver the same results.
Increases Calorie Expenditure
This is the one claim that holds up. Research shows walking with a weighted vest equal to 10–15% of your body weight does increase oxygen consumption and calorie burn compared to walking without one. The difference, however, was only observed when participants walked at a brisk pace—not during a casual stroll.
The same research also found no benefit when the vest was lighter than 10% of body weight. They concluded that weighted vests can safely increase exercise intensity without negatively affecting walking mechanics.
Final Thoughts
Walking with a weighted vest doesn’t improve bone density or muscle mass. But it can help you burn more calories—as long as the vest is at least 10% of your body weight and you’re walking at a brisk pace. If you want to try it, start with 10% of your body weight and add 5% each week, up to a maximum of 25%.
So, what do you think? Does this surprise you? Do you currently walk with a weighted vest, or have you thought about trying one? I’d love to hear what motivated you.
