Kaya Scodelario found making 'Maze Runner: The Scorch Trials' like having a ''hangover every single day''.

The 23-year-old actress - who's reprised the role of Teresa Agnes for the sequel to the 2014 sci-fi hit 'The Maze Runner' - has revealed the physical impact of spending hours filming scenes for the new movie at altitude in Mexico.

Speaking at a specially-arranged fan event in London's Leicester Square last night (07.09.15), Kaya shared: ''It feels like you wake up with a hangover every single day.

''But it's beautiful. The landscape is really important to the movie, it's so vast.''

Meanwhile, director Wes Ball revealed filming the latest movie in the franchise posed a markedly different challenge to the first.

He explained: ''Filming for the first film was flat and humid and full of bugs. Now we're in this mile-high city with a big change in atmosphere.

''Shooting in these crazy environments of sand and rock and rusty metal was a completely different environment for us, but it adds to the movie in a really cool way.''

'Maze Runner: The Scorch Trials' - which sees Dylan O'Brien, Thomas Brodie-Sangster and Ki Hong Lee all return to their roles from the first movie - opens later this month.