TIME Exercise/Fitness

You Asked: Is Yoga Good Exercise?

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Elizabeth Renstrom for TIME

By almost any measure, the answer is yes—but don't let it be all you do.

From CrossFit to Insanity workouts, exercise has lately trended toward the extreme. But physical activity doesn’t always have to be vigorous to be effective. While it may seem mellow compared to most training programs, yoga’s health benefits keep pace—and often outdistance—what many people would call “traditional” forms of exercise.

For starters, research shows regular yoga practice lowers your risk for heart disease and hypertension. Yoga may also lessen symptoms of depression, headaches, diabetes, some forms of cancer and pain-related diseases like arthritis.

Yoga also seems to combat weight gain. One 4-year study from Seattle’s Fred Hutchinson Cancer Research Center found middle-aged adults who practiced yoga at least once a week gained 3 fewer pounds than those who stuck with other forms of exercise. The same study found overweight adults who practice yoga lost 5 pounds, while a non-yoga group gained 13 pounds. Those results held even when the authors accounted for different eating habits.

How can a little bending and stretching do all that? Unlike exercises like running or lifting weights—both of which crank up your heart rate and stimulate your nervous system—yoga does just the opposite. “It puts you in a parasympathetic state, so your heart rate goes down and blood pressure goes down,” says Dr. Tiffany Field, director of the Touch Research Institute at the University of Miami School of Medicine.

Field has published an in-depth review of yoga’s potential health benefits. She says the types and varieties of movement involved in yoga stimulate pressure receptors in your skin, which in turn ramp up your brain and body’s vagal activity. Your vagus nerve connects your brain to several of your organs, and it also plays a role in hormone production and release.

“Stress hormones like cortisol decrease as vagal activity increases,” Field says. At the same time, this uptick in vagal activity triggers the release of the hormone serotonin, which helps regulate everything from your mood and appetite to your sleep patterns.

All of this may explain yoga’s research-backed ties to a healthier heart, as well as its ability to slash your stress, improve your mood, quell your appetite and help you sleep more soundly, Field says. When you consider the health perks linked to each of those brain and body benefits—lower inflammation, lower body weight, lower disease risk—you could make an argument that few activities are as good for you as yoga.

One thing yoga doesn’t do, though, is burn loads of calories. Even hot forms of yoga like Bikram result in modest energy expenditures—roughly the number of calories you’d burn during a brisk walk.

While more and more research suggests calories shouldn’t be your sole focus when it comes to diet and exercise, there’s no question that running, swimming, lifting weights and other more-vigorous forms of exercise are great for your brain and body.

Yoga is unquestionably good for you, Field says, but it should be done in tandem with traditional forms of physical activity—not in place of them.

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