Want to keep your brain sharp as you age? Exercising for as little as 10 minutes a few times per week can help stop mental decline in its tracks. We already know that engaging in regular exercise is one of the healthiest habits you can adopt, regardless of your age or current physical condition. Studies have shown that moderately intense aerobic exercise, like taking a brisk walk, is safe for most people and can strengthen bones and muscles, reduce your risks for disease and even improve brain health,[i] forestalling the cognitive decline associated with aging. A study published in the journal Alzheimer’s Research and Therapy suggests that exercising more than once per week for at least 10 minutes can significantly reduce the risk of developing Alzheimer’s disease in individuals already suffering from mild cognitive impairment (MCI).[ii] MCI may be diagnosed when a person experiences greater-than-average memory loss or confusion but has not …