New mother Maggie Gyllenhaal‘s new movie has put her off having more children.

The Nanny McPhee and the Big Bang actress, who plays a struggling mother in the 2010 comedy, found working with five young co-stars and animals exhausting.

“I’m playing a mom at her wits end—tripping over things, with things falling on my head. That kind of physical comedy is exhausting. Especially working with five kids and sometimes animals.”

The 31-year-old beauty, who has two-year-old daughter Ramona with her husband Peter Sarsgaard, loves being a mother, but admits that it is very different from how she expected.

She told British Marie Claire: “Before my daughter was born, I was all, ‘I’m only going to feed her organic food, I’m only going to give her cloth diapers…’ And then, once you have a real child who is starving on a plane, you give them a bag of potato chips because that’s all there is, and they’re OK and it’s fine.”