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Any serious gym rat or outdoorsy fitness guru knows that working out is not just good for your figure and physical health -- it can provide a wealth of mental health benefits as well. This week on AOL Health, we review a slew of recent studies that indicate the impact a wide range of activities -- from house work to dancing -- have on brain power, stress levels, quality of sleep, social skills and more. One interesting find? Regular physical activity might be just as effective, or more effective, as anti-depressants, depending on the severity of your mental problems, according to a series of studies conducted at Duke University. Learn more about exercising to improve your mental health.