Katharine McPhee in Bathing Suit Says "It Was Always You"

Katharine McPhee is celebrating Valentine’s Day with her husband, producer David Foster. She shared a highlight reel of the couple together over the years on Instagram. In it, the couple is seen spending time on a boat and at the beach, among other things. She captioned it, “It was always you. Happy love day.” How does she stay so fit? Read on to see 5 ways Katharine McPhee 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!

1. She Does One Body Part At A Time During Workouts

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McPhee’s trainer Oscar Smith revealed some of her workout secrets to Life & Style. Smith says that they focus on one body part at a time during sessions. “For upper body, we would focus on a specific body part, then start off what I call ‘the Triangle,'” he says. “Some days with no weights would be 15 reps of assisted pull-ups, chin-ups, reverse grip pull-ups, close grip pull-ups, wide grip pull-ups, 50 dips, then 50 decline push-ups, 50 incline push-ups, 50 regular push-ups.

2. She’s Comfortable With Herself

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After having her first child, McPhee’s perspective on her body changed. She opened up about this to People. "What I didn't expect was to have the baby and then be so at peace with my body," she said. "I had this, wow, like this huge appreciation of what my body had just done and given me that I wish that I'd given myself a little bit more of that grace through the pregnancy. I actually had this huge gift where I felt zero pressure to kind of get back to a certain standard. I was just like, 'Wow, this is such a moment in time to enjoy a new baby and give thanks to this incredible body that just did something so spectacular, like truly a miracle.' "

3. She Doesn’t Diet

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McPhee tells Health that she doesn’t like to diet. "I can't do that, it's too restricting for me," she said. "Personally, juicing is not interesting enough for me; I like to, like, eat my food. I love salads, I love clean food; it makes me feel good. But the idea that you can never eat a burger and French fries (without gaining) weight five days later? I just don't believe that's true.”

4. She Works Out Her Abs

McPhee has amazing abs. She tells Health that she does a lot of core workouts. "I like a move on the bench where you bend. And the scissors are, like, crazy. It's the knees coming in and then out that works a different part of your lower abs. But it's really the number of reps that you're doing.”

5. She Takes Off Her Makeup

McPhee revealed some of her favorite skincare products to Glamour. She says that she always makes sure to remove her makeup. “​​My morning and night skin care routines tend to be the same. At night I am a big fan of Neutrogena wipes. I always have been. I also love the MAC wipes. I think they were the first to come out with those makeup remover wipes, and I've never had problems with breaking out with them. And there's just enough of a floral scent that it's pleasant.”