This ‘Sleeping Cap’ Cleans Your Brain

Have you ever woken up groggy after a night of poor sleep? It’s a common occurrence, but the reason behind it has long been considered a mystery. In 2012, researchers discovered the glymphatic system, which flushes the brain during deep sleep to clear toxic waste, and it was a breakthrough for understanding sleep. However, studying the glymphatic system requires an MRI machine. Now, according to a recent New Atlas article, the U.S. Army is funding researchers at Rice University to develop a portable machine to make sleep research easier.