Why Do You Always Wake Up at 3 a.m.?

Waking up at the same time every night is surprisingly common. It’s usually harmless, especially if you easily doze off again. Here’s what to do about it.

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What’s the Right Way to Take Melatonin?

Taking melatonin may help shift workers and people with circadian rhythm disorders adjust their biological sleep clock. Here’s how to take it, and how to allow your body’s own melatonin to work best.

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Is Insomnia Bad for Your Heart?

Find the truth about questions that pique your curiosity in our series, “The Short Answer.” Interventional cardiologist Leslie Cho, MD, answers this one about insomnia’s affect on your heart.