50 Cent has rapped about getting rich. Now he is focusing on getting fit.
The hip-hop star is putting out a fitness book which is set to be published in January 2013 by Avery Books.
Entitled Formula 50: A 6-Week Total Body Transformation Plan, it will tout metabolic resistance training as the key to getting in shape. It will also include a nutrition guide.
The rapper said he wants to help people "make positive changes and take charge of their overall health".
Formula 50 will be the latest credit for 50 Cent as an author. He recently released the teen novel Playground and also wrote Pieces To Weight, The 50th Law.
His latest project is co-written with Jeff O'Connell, editor-in-chief of Bodybuilding.com.
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