One of the biggest downsides to a long-haul flight is waiting for your body to readjust to the new time zone once you touch down.
But Airbus and Qatar Airways think they might have found a solution to the perennial jetlag problem with their latest aircraft.
The A350 XWB comes with a variety of improvements designed to minimize that groggy feeling you get from flying halfway around the world.
One of the main innovations is a system of LED lights inside the cabin that are designed to change color to mimic the Sun's natural glow - and they're programmed to fit in with our bodies' natural circadian rhythms no matter what the actual time is.
What's more, the plane's filtering system refreshes the air inside the cabin every 2 or 3 minutes, and keeps it pressurized at the equivalent of an altitude of 1,828.8 meters (6,000 feet).
Again, Airbus says this improves passengers-comfort and minimize the effects of jetlag once they step back onto the ground.
In terms of passenger comfort, the economy seats are a little wider and a little further apart, and it's easier to get down the aisles.
The interior design of the cabin can be adapted by individual airlines, depending on how they want to make use of the space (and how many business class passengers they're expecting).
"The design process was about optimization, pushing the constraints, and opening up the box of solutions," said Alain De Zotti, chief engineer of the A350 XWB program.