Sleep expert Matthew Walker has a very serious message for Americans. If you’re regularly sleeping less than seven hours a night, says the professor of neuroscience and psychology at the University of ...

If you’ve ever suffered a night of poor sleep—like, you got about three hours less than you wanted—you may have found yourself in a doom spiral, thinking that you’ll never sleep well again (been there ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Put simply, sleep is the maintenance system that keeps every organ functioning ...

Updated September 16, 2025 at 5:00 AM EDT This story originally published on Jan. 9, 2024, and has been updated. Sleep has a huge impact on our health. It helps our brains function, protects against ...

How does your brain know when it's time to sleep? There are two main factors: Hours Awake. The longer you've been awake, the stronger your drive for sleep. Circadian Rhythm. Your body operates on a ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American We all know we should get more sleep, we're ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

The modern world is filled with unlimited options for how to spend our time. We devote significant amounts of energy to work, where we are expected to accomplish more in less time with fewer resources ...