Jessie James Decker in Bathing Suit Says "Happy Valentine's Day"

It's Valentine's Day, and singer Jessie James Decker and former American football wide receiver Eric Decker are making plans to celebrate it. Jessie posted a sweet photo on Instagram of the two of them cuddled up. She captioned the post, "Happy Valentine's Day to the love of my life" and then…called him a lucky man. How does she stay so fit? Read on to see 5 ways Jessie James Decker 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!

After having her second child, Decker opened up about her diet to People. She said that she wasn't trying to limit her food intake to lose weight. She also revealed that she was eating a lot of protein-rich food. "Never starve yourself," she said. "Focus on protein, protein, protein." Upping your protein isn't just an athlete's strategy for bulking up—it's also the best way for all of us to slim down. After all, what do Rocky Balboa and Kim Kardashian have in common? They both rely on plenty of protein to get their bodies in tip-top shape. While Rocky chugged raw eggs before his a.m. runs, Kim K. revealed that she snuck protein into each of her meals and snacks to get back to her pre-baby weight. 

Decker opened up about what she eats each day to People, and she revealed some of her wellness secrets, including how she stays hydrated. Decker says that she likes to drink a lot of water with lemon each day. "As far as water I use this plastic 32 oz. mason jar hugs and keep them full with lemon all day long. I have 4 to 5 refills a day. It's the only way I keep up with my water intake!"

Decker is open about going on the South Beach Diet, especially having her three children. She told HollywoodLife that she went back on the plan during quarantine. "In quarantine I went for it, so that's been pretty hard, but I feel like being a part of South Beach was what helped me then and I know that it works… South Beach makes the food for you, if you want that, and it'll come right to your door, and you just put in your fridge or freezer. And that's it, which is really awesome, and I'll do that."

Whenever Decker travels, she says that she will bring healthy snacks and some of her South Beach bars, to avoid eating unhealthy food. "When I am on the road, I do grab the bars and the snacks to stay on top of it, that way I don't grab like a bag of Cheetos or something," she says to E! Online. 

Decker tells E! Online that she tries to get in a quick workout, usually 20 minutes, each day, no matter where she is. "I always say, you just need 20 minutes a day. That is it. 20 minutes to do really fast circuits and you can bring some weights with you to work. I don't know, sneak where you are. I'll do it in the hotel room. There are many places you can do this, but you can write a list of little circuits to do, like 20 jumping jacks, 10 push ups, and you just do it over and over and over again until you break a sweat. 20 minutes, that's all you need."