Prominent scientists writing recently in the Journal of Neuroscience have revealed several new discoveries. The brain has its own clearing system separate from the body’s lymphatic system. This clearing system (glymphatic) only works when we’re sleeping. It uses glial cells on the brain’s surface to clean the cellular waste carried by a clear and watery cerebrospinal fluid (2). It’s interesting to note that during waking hours, only 5 percent of this glial cleaning system is active.