I wanted to add one more article in my series of postings on sleep. This article describes the study that showed that when we sleep our brain cells shrink to allow more space for fluid to flow and clear the brain of waste material. They believe that the brain is not able to simultaneously focus on cleaning and wakeful thinking.So whether it's ADHD, anxiety, depression, or something else disrupting your sleep, there is more and more information becoming available about what you're missing out on and why it's important to treat insomnia seriously.You can read the BBC article here.