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Originally posted by chr0naut
reply to post by BIHOTZ
When you yawn, it increases blood flow to your scalp, not your brain.
Your brain is largely supplied by blood vessels that run beside your spine. You'd have far greater control over blood to your brain by clenching muscles in your throat.
The pineal gland is buried deep in the brain and is very low (close to the spine). It is not right up in your brain but is at the top of your spine. If you have your head centered and at rest, and drew a horizontal line back from the tip of your nose, that line would probably go through the pineal gland.
The sound you hear when you clench the muscles in your skull is due to pressure constriction in your ears, which are located higher than your pineal.
I am unconvinced.
If that's the case, then why do we yawn when we're tired?
It doesn't make a difference. Do not attempt this exercise as you might get an aneurysm or stroke.
Originally posted by YogaGinns
reply to post by BIHOTZ
I would truly love to find another way to improve the flow of blood to the brain, specifically the pineal gland, as I have high blood pressure and headstands are considered contradictive (sp) in such cases.
It doesn't make a difference. Do not attempt this exercise as you might get an aneurysm or stroke.