Which is better injecting insulin before meal or after using long meal?

If hot water is not available in the ware washing sink, food establishments can still serve food using

What conditions are unaffected in physical conditions

You are travelling on a long non-stop flight from tahiti to tampa. you have been in the air for about 7 hours and have not moved, since you boarded the plane at tahiti. you need to use the rest room and on standing up feel dizzy. the best explanation for your dizziness