Originally Posted by
Artpen100
Sure, 12 hours in economy might not kill you. I did it when I was younger. But if the point of the trip is to meet some business objective, and doing so will make it harder for you to achieve that objective, then you should perhaps reconsider whether that is the best choice.
If flying physically hurts you, perhaps you should not be flying for work.
You should perhaps reconsider whether that line of work is the best choice.