Could You Handle Blake Lively's "The Shallows" Diet?

Spending the greater portion of a film battling sharks, overcoming starvation, and incurring damage from the elements (all while in a string bikini, no less) may have been a tough feat for Blake Lively, and after seeing footage of her new film, The Shallows, we're fairly certain the physical and diet prep must have been a doozie. According to Lively's nutritionist, Steve Macari, and her trainer, Don Saladino, it wasn't easy, but thankfully for us, it's actually doable. The key is eating clean, loading up on morning protein, not skipping carbs (Macari says they're necessary for post-workout recovery), and following the celeb-loved 80/20 method. Keep scrolling to learn the rules Lively followed to get ready for this role.

For more celeb diet info, take a look at Kourtney Kardashian's intense meal plan.