This fascinating research into the brain’s “glymphatic system,” which functions as the house cleaner of the brain, is beginning to provide a deeper mechanistic understanding of why 7-9 hours of good quality sleep is so important for cognitive health and preventing dementia. Read it, but don’t stay up too late doing so!

My take is that sleep is the new exercise: give it short shrift at your peril. http://nyti.ms/1itahwO