“Is sleeping position that important? Would we be better off without a pillow? The science addressing these questions is lacking, but we can still make some conclusions based on the research.
“*CORRECTION: It’s no longer accurate to say the brain *doesn’t* have a lymphatic system… [Nature article from 1 day ago – https://go.nature.com/2SE2pkL]
“The central nervous system (CNS) was long thought to lack lymphatic drainage; fluid and macromolecules were instead thought to be cleared from the CNS by other routes, such as through absorption into the bloodstream, or through channels running along the outside of blood vessels or nerves to reach the lymphatic system outside the CNS.” – YouTube