the.com/cerebrospinal
the personal swimming pool your brain floats in to avoid crushing under its own weight
Brain buoyancyReduces brain's effective weight from 1400g to 25g
Full refreshEntire volume replaced about four times daily
Night cleanFloods the brain during sleep to flush waste
Tap testSpinal taps draw it from the lower back
Cushion dutyShock-absorbs your brain against your own skull