It's not just Thanksgiving we have to celebrate this week; it's also Robin Roberts' birthday, and paying tribute is her co-star on Good Morning America, Lara Spencer. "Happy birthday to the one and only. Hope you guys are celebrating in your happy place with your clan right about now. Just remember—-Coco!!! Wolfpack!! We will take it to the court soon. Love you to the moon and back," she wrote, captioning an Instagram photo of the pair in swimwear. How do Spencer and Roberts stay to fit while keeping so busy? Read on to see 6 ways they stay 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!

Lara frequently posts about playing tennis—including recently, when the ball got stuck in her racket.  "Can someone tell me the odds of this happening? Clearly I was not watching the ball when I went to volley considering it went nowhere near my strings and instead I actually caught the ball w my racquet!!!!! I don't think I could do this in a million years on purpose!! Maybe I should buy a lottery ticket today too? #playwinlunch #tennis" she wrote.

Roberts was diagnosed with a blood and bone marrow disease called myelodysplastic syndrome (MDS). "I was told I had less than two years to live if I did not have a successful bone marrow transplant," Roberts says. "When fear knocks, I answer the door with faith—that this too shall pass and I'm going to get through it."

Initially, Spencer, an athlete, was discouraged by the news that she needed a hip replacement. But then: "I was like, okay, I'm going to approach this like any other sport in my life," she told ABC News. "I'm going to kill it." "It was embarrassing to share and then I realized there is nothing to be embarrassed about," she said. "I have a genetic predisposition for this but if you're athletic and you move, it's happening younger and younger." She added: "There is no ignoring it at this point," she said of the pain. "I just want to say anybody out there who suffers with chronic pain, I feel you. It takes over your life. It affects you emotionally, mentally, physically. You cannot sleep. It's hard to think about. It's gnawing at you all the time." "What I wish I would have done is just taken care of this sooner and spoken up," Spencer added.

"As women, we have to be our best advocates," Roberts told Parade. "We can't be afraid to raise our hand and say, 'I need help.' As women, we want to be the caretakers. I can't tell you how many women reach out to me in the throes of having a transplant or cancer, and they're worried about their loved ones. I say, 'What you can do is let them care for you. That's the biggest gift you can give them. Because I guarantee you, you've always been the giver, and they want to do something in return.'"

"I eat what I want, in moderation," she told Parade. "I gravitate toward fresh veggies and clean foods, thankfully, but I am also a sucker for a cupcake every once in a while. I make sure to eat lots of kale, broccoli, blueberries, strawberries and spinach."

"Be mindful of what you're saying to yourself," Roberts told Parade.
I'll take pictures with people at the studio, and afterwards, I always say, 'Be good to you.' Everything begins with how you speak to yourself. Sometimes we'll say things about ourselves to ourselves that we would never even utter to a stranger. What you think and say, you can become. And that's good or bad."