This is interesting. I feel like we have been told for years that sleep was what "cleaned up your brain" from various toxins/chemicals. I still sleep like crap but maybe as I start to work out more at least my brain might work better. Archive: https://archive.today/oeYFd From the post: >>It's always such a relief to climb into bed at the end of a long day. But the exact reason why humans need sleep is still a mystery, according to new research. For a long time it has been thought the brain uses sleep to flush out toxins and get rid of damaging molecules. However a new study now suggests the opposite may be true – and experts say being active might be more beneficial for 'cleaning' the brain.