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下面是一篇英文文本："Anxiety and depression are two of the most common mental health disorders worldwide. In this study, we aimed to investigate the effects of daily exercise on anxiety and depression in a sample of 200 adults. The results showed that participants who engaged in at least 30 minutes of exercise per day had significantly lower levels of anxiety and depression compared to those who did not exercise regularly. These findings suggest that exercise may be a useful tool for managing anxiety and depression." （来源：Medical News Today）
Regular exercise for at least 30 minutes daily is shown to decrease anxiety and depression levels in adults according to a study of 200 participants.