I learned years ago from one of my old college buds who works for Dell and he is sent to SE Asia to inspect their workforce (unofficially). Does this to this day: he never sits down at the airport before the flight.
Not even when eating or just waiting. Because it’s unhealthy to sit on your ass for 10 hours on a flight. You have to move. So he’s just standing the entire time before take off and nowadays for intl flights, you have to check in minimum 3 hours beforehand. he learned this trick from a Brit from the British consulate who is sent around the world, whom he chatted on a flight.
Thanks for the tip. I had never heard that. That is probably more important as you get older.