Beat seasonal fatigue with Tom's Guide's week-long campaign to Fall Back into Great Sleep — from expert interviews to in-depth how-tos.

Feeling tired all day even after sleeping? Your cortisol rhythm may be disrupted. Studies link flattened cortisol patterns to ...

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The mom of a 16-year-old night owl asks: How much sleep do teens need in the summer? Should parents wake up their teens at a semi-decent hour of the morning, or let them sleep? “He is turning into a ...

After a long day of work, chores, errands and parenting, you can barely keep your eyes open. But instead of crashing into the soft bed you’ve been yearning for all day, you’re hit with an unexpected ...