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Jessica Biel

David Becker/Getty Images

Jessica Biel was glowing at the Runner Runner premiere in Las Vegas on Wednesday, Sept. 18—and that's likely because the 31-year-old actress had just completed a two-day cleanse. Justin Timberlake's wife first shared a picture of her pressed juices via Instagram on Monday, Sept. 16.

"This is happening! @eatpaleta two day detox," she captioned. "Wish me luck." Two days later, Biel shared another Instagram picture of the bottles—but this time, they were all empty. "Done! Detoxed & healthy from @eatpaleta 2 day cleanse," she wrote. "Everything in moderation, people!"

Jessica Biel, Detox, Instagram

Instagram

Why the famously fit star decided to go on a cleanse is unknown—but perhaps Biel's better half has something to do with it. After all, in the January issue of Elle, the Minnesota native revealed that Timberlake loves baking pies.

"He's Southern, so he's got all this influence from his grandma. He does a three-layer pie, and blueberry crunch cake, which is pretty unbelievable," she said of Timberlake, 32. "It doesn't happen all that often, thank God. Otherwise, it would be a big problem."