Comment by tnias23

Assuming that this suggestion of “pushing up” CSF is possible, if taken literally, it would increase intracranial pressure (ICP). The normal ICP range is around 7-15 mmHg, and pressures outside this range can reduce cerebral perfusion, with increases potentially causing cerebral ischemia and brain herniation. Therefore, maintaining normal ICP is crucial for brain health. Let’s assume this supposed technique alters ICP minimally enough to stay within the normal range. I am not aware of any evidence suggesting that ICP at the higher end of normal (or anywhere within normal) is associated with health benefits.