08-20-2022, 11:32 AM
(08-19-2022, 10:32 AM)BFritz21 Wrote:DON'T HOLD IT IN!
I think it is the size of the hit more than the fact that you hold it in. If you take a small hit then it does not really create any extra pressure on the eyes. It is the big ones that create pressure on your eyes.
I have searched and found no warning that simply holding your breath can damage your eyes, but I did find this study that shows that holding your breath might help heal brain injuries.
Hold your breath! - PMC (nih.gov)
Reactive oxygen species produced in response to changes in the level of oxygen in water can promote the regeneration of brain tissue in newts.