Jet lag, for me, is more about circadian rhythm disruption than air quality. That’s where sleeping on a longer flight is much more preferable to taking a short

Jet lag, for me, is more about circadian rhythm disruption than air quality. That’s where sleeping on a longer flight is much more preferable to taking a shorter, faster flight and then suffering until one can get into a blacked out hotel room. But in either case the downtime would be similar, I think.