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How Much Sleep Do You Need?

One of the most common messages people hear about sleep is that adults need eight hours a night. That idea is not entirely wrong, but it is often treated too rigidly. In general, most adults need somewhere in the range of 7 to 9 hours of sleep. That range matters because sleep need varies from person to person, and it can also change over time. For people struggling with insomnia, this becomes especially important. Many assume that if they feel tired, the solution must be to

How Is CBT-I Different from Generic Sleep Hygiene Tips?

Many people come to CBT-I (Cognitive Behavioral Therapy for Insomnia) after trying various sleep tips they’ve found online—only to feel frustrated when nothing seems to work. It’s easy to conclude that “sleep hygiene doesn’t work” or that insomnia is just something you have to live with. But that conclusion often misses something important. Insomnia is rarely caused or maintained by a single factor. More often, it’s the result of several interacting factors—behavioral, cognit

CBT-I Series

Can’t sleep? Feeling unable to switch off your mind in bed? Changing your mattress and pillows and even quitting coffee did not seem to help? Finding yourself overwhelmed by conflicting sleep advice from the internet and well-meaning friends? These are concerns many people share—and the good news is that they are well understood, and there is real, effective help available. Insomnia is a health condition characterized by persistent difficulty falling asleep, staying asleep, o

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Department of Psychology

The University of Hong Kong

627 Jockey Club Tower

Centennial Campus

The University of Hong Kong

Pokfulam

Hong Kong

(852) 3917-2295

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Updated 2024

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