Feeling down? Blame your chair: After surveying more than 3,300 government employees, Australian researchers found that men who sat for more than 6 hours a day at work were 90 percent more likely to feel moderate psychological distress—like feeling nervous, restless, hopeless, or even tired—than men who sat for less than 3 hours a day.

What’s more, other types of sedentary behavior—like watching TV or playing electronic games—can increase your risk for anxiety, according to a recent meta-analysis of nine studies published in BMC Public Health. That might be because if you’re spending your time on those pastimes, you’re probably not fitting in enough physical activity, the researchers say. (Here are 7 things that destroy your mood.)

And that’s important, since exercise has mood-boosting benefits. When you work up a sweat, your body produces feel-good hormones called endorphins, according to the Mayo Clinic. What’s more, recent research indicates that cardio can boost your mood just as effectively as prescribed antidepressants.

Too busy to walk during your lunch break? Check out this quick workout you can do right at your desk. Your body and mind will thank you.

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