If you're 6'4" an economy plane ticket is hell on earth.
I am only 6'3" and it is brutal for me, but also me. https://void.cat/d/AZAr5TsnaEDajACtuomPuW.webp
I’m 6’3. It’s not that bad for a few hours but I won’t do more than 4 hours in economy.
Unless I'm on an exit row my knees are touching the back of the seat in front of me. Then they recline, and the pain starts in earnest.