Actress Amber Heard doesn't go to the gym as she prefers to stay in shape by exercising outdoors.

`The Rum Diary` actress, who is engaged to actor Johnny Depp, hates working out indoors to keep herself in shape.

"I'm active. That's the key. I'm not really one to go sit in a gym. I get claustrophobic, I guess. I'm lucky though. I live in Los Angeles, so I have a lot of time to be outside and be active. That's what I do,` eonline.com quoted her as saying.