将一个一篇英语短文翻译成中文。


短文原文：A new study finds that staying active and exercising regularly can help prevent depression, guard against stress and improve overall mental well-being.
一项新研究发现，保持活跃并定期锻炼可以帮助预防抑郁，减轻压力，并改善整体心理健康。