When I hired into Fedex
...and
being exposed to small amounts of so many people's recirculated bugs
Interesting, wonder if exposure to sick passengers is actually beneficial, would’ve thought the freighter people have an easier time of it. Almost like getting a vaccination every time you fly I guess. I’ve done both, never really noticed a difference with the exception of the Saudi Arabian Haj, extreme bacterial exposure there, everyone got pretty sick.
Still, boxes or people, circadian rhythm disruption is likely the main issue here.