Exercise moves lymph out of the general tissues, though the brain only moves lymph in sleep. This is how the body "takes out the trash." Longer explanation in

Exercise moves lymph out of the general tissues, though the brain only moves lymph in sleep. This is how the body "takes out the trash." Longer explanation in previous comment: https://news.ycombinator.com/item?id=25427090 https://news.ycombinator.com/item?id=25427090