Cameron Diaz isn't afraid of getting older—and she's aging gorgeously.

In a new Instagram photo, Diaz shows off her new book, The Longevity Book, and her makeup-free face.

"I'm so excited to continue the conversation because learning that you can age well, will actually help you age better," 43-year-old Diaz shared with the post. "If you understand how your body works then you can take action to help keep it in the best possible condition so it can carry you through a long and beautiful life. | Read my full post at www.OurBodyBook.com @thebodybook #linkinprofile #longevitybook #knowledgeispower #everyoneages."

A photo posted by Cameron Diaz (@camerondiaz) on Mar 30, 2016 at 9:17am PDT

“I never understood why people lie about their age and say that they are younger,” Diaz told Parade last week. “If I’m going to lie about my age, I’m going to lie up. ‘Oh me, I’m 49.’ And they’ll be like, ‘Oh my god, you look amazing for 49.’ Instead of telling people I’m 35 and they tell me, ‘Wow, you should go take a nap’ or maybe ‘You really need to exfoliate.’ ”

According to Diaz, she sees aging as a “spiritual and emotional journey, as well as a physical journey,” and thinks people should be more accepting of the idea.

“How do you allow yourself to accept it, engage it and interact with yourself spiritually, emotionally and physically? I always say, ‘If you’re not aging there is really only one other alternative, and it sucks,’” she explained.

Diaz went on to reveal that staying active is a big part of aging gracefully.

“There was a time in my early twenties where sitting on the couch was what I did for fun, but I like to keep moving [now],” she said. “I’m not a sedentary person by any means. It’s not just about working out. It’s about moving your body. Your body needs movement to utilize the energy and nutrients properly.”

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