Nicole Kidman, 54, just scored another Oscar nomination, this time for playing Lucille Ball in Being the Ricardos, and she's got another big prize, too: Husband Keith Urban. The two posed in a selfie on February 14th, looking very much in love on the beach. "Sending you all so much love for #ValentinesDay today!" she captioned the image. How does she stay so fit? Read on to see 7 ways Nicole Kidman stays in shape and the photos that prove they work—and to get beach-ready yourself, don't miss these essential 30 Best-Ever Celebrity Bathing Suit Photos!

Kidman stays happy daily by "choosing to feel gratitude, first and foremost. Choosing to sleep in sometimes rather than get up and exercise—give things up so that I can have more time with my kids. Making the time to go with my husband and have a date…And I'm willing always to adapt and change. I'm not rigid," she told Byrdie. That sleep can be crucial. Your body isn't a simple mouth-to-cells plumbing network, where you feed it exercise of protein and it works great. There are several things that influence your metabolism and how well it does its job. Physical activity plays a part. So do sleep quality and your stress levels. Even the temperature outside your window can play a role in your body's energy-releasing apparatus.

"Yoga poses, also called postures, are a series of movements designed to increase strength and flexibility. Poses range from simple to difficult. In a simple post, you might lie on the floor while completely relaxed. A difficult posture may have you stretching your physical limits," says the Mayo Clinic. And: "Controlling your breathing is an important part of yoga. Yoga teaches that controlling your breathing can help you control your body and quiet your mind."

"I'm actually not that strict with my diet," she told the Los Angeles Times. "I pretty much eat anything, but all in moderation." She's been consistent about this. "It's walking a path that's ultimately 80% healthy, 20% … sometimes it falls to 70," she told Women's Health magazine way back in 2013, speaking about her diet. "But that's why I think you have things like natural health remedies — you find out what works for you. And I do a lot and I have a lot of energy."

Kidman has said she loves "a fresh seafood platter with Sydney rock oysters, tiger prawns, mudcrab and lobster." Pure proteins like these—and foods like grilled chicken, broiled salmon, sautéed shrimp and cubed tofu (protein foods that have nothing added, except perhaps a minimal amount of fat for cooking)—are terrific for building muscle and blasting fat. So too are vegetables, fruits, and healthy fats like olive, canola, avocado and walnut oils, plant-fat rich foods like avocados and olives, and nut and seed butters like peanut butter, almond butter and tahini.

"Keith and I love coffee. I love the foam more than the coffee," she told People. "I will go and order a cappuccino and say, make it all foam and very little coffee. They know me now at the Starbucks in Nashville." Coffee and tea are powerful weight-loss beverages. They reduce your appetite and increase your metabolism. They also give you a shot of heart-healthy antioxidants, improve brain function, and fight cancer. Also, replacing sugar-sweetened beverages with water could eliminate an average of 235 excess calories a day, according to a Columbia University study.df44d9eab23ea271ddde7545ae2c09ec

She's not attached to her routines. "No, I like that feeling of going, you know what? This morning, I'm just not gonna do that. I'm just gonna sit and read the paper, and we're all just gonna kick back. And I know that we have plans, but we're not gonna do that. We're gonna change that. I have a big thing about just being easy on yourself, and on others. To go with the flow," she told Byrdie.

Kidman told Harper's Bazaar she's "looking for really uncomfortable places, artistically," adding, "I'm never looking to sit down on what I've already done." Maybe that's why she went from playing Russian wellness guru in Nine Perfect Strangers to Lucille Ball in Being the Ricardos. "I suppose the artist spirit, a lot of times, is saying, 'I don't care what it's gonna cost me as a human being, because my thrust is deeply artistic.'"