Walking or running? Both are good but you can choose to speed up the pace

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Walking is among the world’s most popular forms of exercise, and far and away the most favored in the United States. And for good reason: It’s simple, accessible and effective. Taking regular walks lowers the risk of many health problems including anxiety, depression, diabetes and some cancers.

However, once your body becomes accustomed to walking, you might want to pick up the pace, said Alyssa Olenick, an exercise physiologist and postdoctoral research fellow in the energy metabolism lab at the University of Colorado Anschutz Medical Campus.

If you can nudge even part of your walk into a run, it offers many of the same physical and mental benefits in far less time. But just how much better is running? And how can you turn your walk into a run?

Why Walking Is Good for You

When considering the health benefits of an activity like walking or running, there are two connected factors to keep in mind. One is the workout’s effect on your fitness — that is, how it improves the efficiency of your heart and lungs. The second is the ultimate positive outcome: Does it help you live a longer life?

If you’re working hard enough that you can still talk but not sing, you’ve crossed from light to moderate physical activity. Studies suggest that moderate activity strengthens your heart and creates new mitochondria, which produces fuel for your muscles, said Dr. Olenick.

What Makes Running Even Better

So how does running compare with walking? It’s more efficient, for one thing, said Duck-chul Lee, a professor of physical activity epidemiology at Iowa State University.

Why? It’s more than the increased speed. Rather than lifting one foot at a time, running involves a series of bounds.

This requires more force, energy and power than walking, Dr. Olenick said. For many people first starting out, running at any pace — even a slow jog — will make your heart and lungs work harder. That can raise your level of effort to what’s known as vigorous activity, meaning you’re breathing hard enough that you can speak only a few words at a time.

Federal health guidelines recommend 150 minutes to 300 minutes per week of moderate-intensity aerobic activity, like brisk walking, or half as much for vigorous activity. That might suggest that running is twice as good as walking. But when it comes to the key outcome of longevity, some studies have found running to be even more effective than that.