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"Psychologists have said it takes 21 days to make or break a habit. On the 22nd day, you've found the way," Jay Z wrote on his Life + Times website ahead of the challenge in 2013.
"PS: B is also joining me."
As for what Bey had to say about her new super-food delivery service? "I am so grateful that I took the challenge and credit Marco with leading by example," she revealed in a statement following the announcement.
"He is the most energetic person I know and it's all because of his decision to live a healthy lifestyle. He came up with a great program to get people motivated to make better nutritional choices.
"All you have to do is try. If I can do it, anyone can. I am excited to partner with him."
