Why We Sleep: How Rest Helps Our Body and Brain
We spend about a third of our lives sleeping — but why do we need it? This article explores the science of sleep, dreams, and why rest is so important to our health.
BBC's Science Focus is packed with news, discoveries, ideas and innovations to keep you up-to-speed with the complexities of the fast-moving world around us. Learn more about subscriptions here.
BBC's Science Focus is packed with news, discoveries, ideas and innovations to keep you up-to-speed with the complexities of the fast-moving world around us. Learn more about subscriptions here.
Most passages are available in three different versions: Level 1 (Grade 3-5), Level 2 (Grade 6-8), and Level 3 (Grade 9-12). Some more complex texts are available only in Level 2 and Level 3. Use the versions that are most appropriate for the students in your class.
Note: The BBC Learning Hub Editorial Team made use of AI tools to create multiple versions of this article, each tailored to different student reading levels. Every version undergoes a thorough review by our BBC Learning editors to ensure accuracy, quality, and appropriateness.
