A single well-planned session each weekend can help maintain a good level of fitness that has been accumulated through more frequent workouts, but only if other factors, such as sleep, nutrition and stress levels, are optimized. That said, one workout a week is infinitely better than none. Well, it turns out that when you continue to make time to move as you age, it's not just your body that will thank you. A new study has found that, for adults 54 and older, exercising just once a week can improve cognitive function and protect against dementia.
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