We drink green smoothies and lemon water and refrain from sugar like the plague, but scientists are now uncovering the processes through which sleep cleanses the brain better than any supplement or detox. 

Previously, scientists thought the brain only cleaned itself by trickling toxins through brain tissues, but according to Maiken Nedergaard, co-director of the Center for Translational Neuromedicin at the University of Rochester Medical Center School of Medicine and Dentistry, wastes are forcefully pushed through the brain at a much faster and higher pace.