Jessie James Decker in Bathing Suit Has "Fun in the Sun"

Jessie James Decker spent her holiday weekend heating up Cancun with her family. The country singer and fashion mogul flaunted her rock hard body in a brown two-piece swimsuit in a variety of photos shared to her Instagram account. “A week of fun in the sun with my crew,” she captioned the gallery. “We had a ball but I have to say I got butterflies on the plane back thinking about putting up the tree.” How does the 33-year-old keep herself 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!

1. Her Workouts Are Hardcore

Jessie puts a lot of focus on weight training. Her workouts are intense, starting with 30 seconds of jump rope, high-knee running, ankle grabs, high kicks, lunges and lateral lunges, spinal rotations, and tension squats, which she demonstrated in a recent Instagram video. Next up? Overhead squats with resistance bands, medicine ball slams and tosses, medicine ball chest passes, medicine ball sit-up tosses, resistance band pulls, deadlifts, step-down exercises, weighted overhead presses, inverted rows, bent over kettlebell rows, weight plate steering wheel exercises, dumbbell rotations, and box jumps. "I work out 3 to 4 times a week and they pretty much look like this with certain variations whether we're doing more upper body or lower body," she explained.

2. She Intermittently Fasts, Unofficially

Jessie is a fan of intermittent fasting, but she doesn’t call it that. She explained to Women’s Health that her eating method is very similar to a 16:8 fasting routine. "I eat what I want to eat within that time frame but don't overdo it," she explained. "The timing really is important to me."

3. Her Diet Is Protein Packed

In order to fuel her workouts, Jessie consumes a lot of protein. When she eats breakfast it will be a bowl of oatmeal or toast and coffee with cream. After her workout, she will sip on a protein shake. "For lunch, I will have 4 to 6 ounces chicken salad or chicken over rice," she explained on Instagram. "For dinner, I will either have a lean red meat, like flank steak with vegetables, chili from my book, or the same kind of thing—chicken and rice vegetables or my fit-enchiladas from my first book.”

4. She Loves Frozen Meals From Trader Joes

Jessie always keeps frozen meals from Trader Joes on hand. "They are so good if I don't have time to make myself lunch," she told Women’s Health. "I get the Indian curry or butter chicken and rice meals, and they are so delicious and filling. I have stashes of them in the freezer in the garage. I never want to run out."

5. She Won’t Skip Workouts

Jessie doesn’t skip her workouts. “Got in at 1:30 am last night from shooting a music video( deets on that coming soon)! But I wasn’t about to miss my work out! Gotta get it in!!! Here’s some snippets from this morning💪 (also if I’m in charge of the music and Eric doesn’t take over, I play @nickelback to get my hyped,” she captioned a recent post. During recent vacations, she even hit her hotel gym to get her sweat on.