I was in our schools computer service team and they trusted the (competent) students way too much. I never misused those credentials but thinking about it now I could have done some hilarious stuff… Anyway. Even without too many permissions I did a thing or two to the computers. I once realised no computer had the BIOS password set. So I set one on a library computer to reserve it for me. Another time i realised you could take the whole network down if you connected two LAN ports directly with each other. That one was more on accident.

For just a second I thought this was Loss

You should watch out because nitric oxide is highly explosive. About the same as nitroglycerin. No but seriously: While it is true that nitric oxide is released in the nasal cavity (always not just during buteyko), the amounts are waay to low to have any noticeable impact. If you are doing breathing exercises any visual effects you notive are probably coming from too much oxygen.

Just don’t eat anything. For three days you should be fine. If your stomach hurts just drink water.