Dakota Johnson takes juices to stay hydrated during filming?

Actress Dakota Johnson has reportedly been consuming a lot juice to stay hydrated during the filming schedule of '50 Shades of Grey'.
The director of the film Sam Taylor-Johnson and Dakota, 24, who plays Anastasia Steele in the big screen adaptation of E L James' erotic novel of the same name, have been ordering juices all day long, reported E! Online.
"They order the organic cold-press juices. They love them. They have a standing order for them. They are not doing a cleanse and are basically drinking a couple each day," a source said.
"This will be a tough movie to film. They are sometimes starting as early as 6:30 am and there are long hours. The juices help them feel great and maintain a high nutritional intake. They energise you and you don't get the same crash with sugar or coffee. It is a more sustainable energy level," the source added.

The movie in which Jamie Dornan stars as Christian Grey, would be releasing on February 13, 2015.