Research shows that strength and flexibility are greatest in the late afternoon and that perceived exertion -- meaning how hard you feel that your body is working -- is lowest.
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What's the Best Time of Day to Exercise?
Some fitness gurus recommend working out first thing in the morning because that's when you're least likely to have scheduling conflicts and therefore more likely to exercise regularly. Plus, early exercisers often say that a morning routine leaves them feeling more energized and productive during the day.
