By InStyle Staff
Mar 11, 2013 @ 1:00 pm

How is Joe Manganiello prepping for swimsuit season? By putting pen to paper! The True Blood hunk announced last week that he plans to release a book all about fitness this holiday season, and he gave us more details about his journey into self-help at the 10th annual John Varvatos Stuart House Benefit this weekend. "[The book] will give you all the tips you need," he told of his upcoming release, named Joe Manganiello's EvolutionThe Cutting-Edge Guide to Breaking Down Mental Walls and Building the Body You’ve Always Wanted. "It’s everything I’ve learned from over two decades of training with some of the best trainers on earth." And there will be a special guest contributor, he noted: "My buddy, Arnold Schwarzenegger, is helping out with it." Doesn't this just pump you up?!

Plus, see more of the sexiest celebrity abs.

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— Carita Rizzo