The Alfonso Cuaron-directed film might have brought the actress back in to the spotlight, but it certainly hasn't been an easy journey.

In an interview with Variety, Sandra Bullock explains that the film didn't just do a number on her physically but also emotionally. She had to shoot the film alone in a box for up to 11 hours a day:
“I was angry at everyone who came up to me with a laptop to tell me where my hand had to be and where my head had to end up within a certain amount of time,” she explains. “It was my job, with all of these constraints, to figure out how to be this person. I cut off all my sounds with ear wigs and the headpieces so I didn't have to be aware of the technology that was happening around me.”
Sandra explains that she felt relieved when her co-star showed up on set George Clooney.
“So when George came, it was like an energy force and I was so appreciative of him being there,” the actress explains. “But when he left, I have never been hit with a depression like that. We had so much fun for three weeks, but then my friend left. I was amazed at how I was affected by him going.”

Bullock admits, “I had a hard time saying goodbye, I didn't want to look at him; I just gave him a pat and he walked away and I was mad because I felt like every day I was pushed against a wall with technology.”
Watch Bullock explain the intense filming experience in her own words in the clip below, and be sure to check out the Directhor review here: