Asa Butterfield Learned To Walk Like A Martian With Ankle Weights for 'Space Between Us'

Asa Butterfield did something we probably never would’ve thought off for his new movie, The Space Between Us.

In the flick, also starring Britt Robertson, Asa stars as Gardner Elliott, a human born on Mars who’s never set foot on Earth. So, because he’s going to Earth for the first time, he had to at least walk like a Martian — and he used ankle weights to help him do it.

Asa actually wore ankle weights for 20 minutes a day while rehearsing and then watched the footage to determine what it looks like to carry around that much weight.

“We wanted it to be noticeable but not over-the-top,” he shared. “So it was a key balance.”

Asa, who’s pictured with co-star Carla Gugino and Spencer List at the New York City premiere last night below, loved the draw of the movie as a whole.

“I think it’s a very human story even though [my character is] a Martian,” he shared. “It really highlights how lucky we are to be on such an incredible planet, how we can’t carry on taking it for granted.”