POLITICS
03/18/2010 05:12 am ET | Updated May 25, 2011

Levi Johnston's Playgirl Prep: Gym And Moose Meat

"Moose meat is very good for you, high in protein and very lean," his trainer, Marvin Jones, tells PEOPLE. "He's an avid hunter, so he has his own."

The 19-year-old father of former Alaska Gov. Sarah Palin's grandchild has adopted a 3,500-calorie low-carb diet as part of a grueling regimen to ready him for next month's photo shoot.

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