India, Dec. 3 -- Ever wondered what Julianne Moore's fitness mantra looks like? The Hollywood star has herself shared several aspects of her fitness regime. Speaking to People magazine, the 65-year-old revealed an extraordinary tip that was shared by her trainer. She said, "I remember I had a trainer who used to say, 'You should take the opportunity to walk backwards.' So every once in a while, I just go ahead and walk backwards, especially up a hill, because it's so good for your body and brain, because your brain's like, 'Whoa, what's that?'"

Moore is celebrating her 65th birthday on Wednesday, December 3.

Moore, who had partnered with Lilly to launch its new Brain Health Matters campaign, said she learned to take her overall health m...