Max Verstappen and Lewis Hamilton were at odds over an important factor during the Las Vegas Grand Prix weekend.
The teams had to make a dramatic time zone shift this weekend after a triple header across two continents, with the final race set to take place in Abu Dhabi in just under a week.
Much of the track action in Las Vegas takes place in the middle of the night, with the race itself and qualifying taking place on the same day.
FP2 was delayed by two hours after its original start time, eventually taking place at 2:30am on Friday and ending at 4am local time following extensive track repairs.
The late starts have required some drivers to take special measures heading into the weekend, to ensure they are at peak performance.
"I tried to, after Brazil already, tried to live a little bit on this kind of timezone," Verstappen told media, including RacingNews365.
"Even when I went home, so going really late to bed for European time standards. In the nights after 12 o'clock, it is a little bit tough. You just have to push yourself through it a bit."
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Hamilton: It's a demanding sport
For his part, Hamilton has not experienced any issues with jet lag but acknowledges the demands that constant shifts in timezones can have on teams and personnel.
"I personally have not found it a problem: I still managed to keep the training up and I feel great at this point in the year.
"I saw the drivers in there before, all complaining about the jet lag," said Hamilton.
"Jet lag is something that's probably can get all of us but I've not found it a problem since I've been here. It is demanding but we know that, entering the sport.
"We know what a season entails and those three back-to-backs were definitely tough but if it was easy, everyone would do it.
"I think I've always just tried to be conscious of the mechanics and all the people that work. That's probably the hardest thing from their perspective but they wouldn't want to be anywhere else, I'm pretty sure they love what they do - as do I."