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Beyonce and Jay-Z's grand vegan experiment: Honest attempt or a fake fad play?

Beyonce and Jay-Z's vegan experiment: Honest attempt or fake fad?

Beyonce and Jay Z
Jay Z and Beyoncé will be eating only a plant-based diet for the 22 days leading up to Christmas. Beyonce.tumblr.com

Jay Z's revealed that he and Beyoncé will be going "completely vegan" for 22 days in honor of Jay's 44th birthday.

The 22Days Challenge, which inspired the couple to make switch to a plant-based diet, is an initiative started by exercise physiologist and friend of Jay Z, Marco Borges.

Jay Z explained how he came to the conclusion that he wanted to make this lifestyle change in a post on his Life + Times blog.

"Psychologists have said it takes 21 days to make or break a habit," Jay-Z writes. "On the 22nd day, you’ve found the way."

The music superstar says it all started a few months ago "when a good friend and vegan challenged [him] to embrace a 'plant-based breakfast' every day," and he found this surprisingly easy to do. Jay-Z also notes that the timing seems serendipitous as his 22-day challenge, which he and Beyoncé began on Tuesday, will end on Christmas day.

Jay Z writes that he isn't exactly sure what he will do following the 22 days in terms of continuing with the full plant-based diet or being "semi-vegan."