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Variations in sleep timing were associated with cognitive performance including delayed verbal memory and worse processing speed.

Caffeine timing is crucial for optimizing energy and productivity while minimizing crashes and sleep disturbances. Align intake with circadian rhythms.

A person’s sleep needs are highly individual, Holliday-Bell says. If you feel refreshed and ready for the day after nine ...

These differences aren’t just habits—they’re part of someone’s biology, and these differences can be grouped into a variety ...

What we normally think of as breakfast probably shouldn’t be breakfast at all. Here’s what—and when—to eat instead.