Researchers at the University of California, Berkeley have identified four factors that affect how alert you feel in the morning. In a new study published in the journal Nature Communications, the researchers analyzed data on a variety of lifestyle factors from 833 adults. Not surprisingly, those who slept longer than usual or woke up later than their usual time showed higher levels of alertness the next morning. Also, those who consumed a high carbohydrate breakfast and those who showed a lower blood glycemic load after breakfast had greater morning alertness. Finally, increased physical activity during the 10 most active hours of the previous day led to more morning alertness the next day. However, physical activity at night was associated with lower morning alertness.
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