Oh careful 'AR' yr mentioning the 'J' word here & along with that other unmentionable 'Q' word that's a sacred area in which to not tread:-)
One often hears of people being cold on an A/C, I know I feel cold when paxing. Could be due the low eb our bdies go into whilst being squashed in like sardines & unable to move. Also to keep certain species of animals quiet the temp is reduced, there might be a method in their madness:-)
'J' could be onto something here, cunning buggers they are, there will be an Ops notice out for all Airlines soon, keep cabin temp down to improve sales!
Wmk2