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The actress, who has been married to the Men in Black star for 14 years and has two children Jaden, 13, and 10-year-old Willow, with him, explained that taking breaks from each other helps their marriage.
She told Uptown: "People think that Will and I don't spend a lot of time together. Too much time, actually, if you ask me. It's always nice to have a little time apart. Sometimes you need that."
Jada said that since becoming a mother, her children take priority.
She commented: "There was a time when all I had to worry about was myself. I'd get offers to do things - to go to Bolivia for three months or go to Prague - and now it's like, I can't.
"It's not about me anymore, it's about me being there for my kids. And there's no-one else I would leave that job to."
The 39-year-old star also defended her and Will's decision to let their children, who both have singing and acting careers, follow in their footsteps.
She added: "There are so many other kids you can worry about.
"My kids? They're going to be all right. I get why people would criticise. But people need to know that Will and I would never put our children in a situation that would bring them detriment."
