Jessica Simpson is heating up Mexico – in her swimsuit. In a new social media post the singer shows off her famously fit figure while vacationing with her family in Cabo San Lucas, Mexico. "2024 Spring Breakin' with the fam was EPIC! Thank you @tinasimpsonofficial for giving these kiddos memorable moments in Cabo that they will hold close to their precious hearts and cherish for a lifetime!" she captioned the series of Instagram snaps. How did the singer get into the best shape of her life after having her children? Here is everything you need to know about the lifestyle habits that helped her lose 100 pounds and keep it off. 

After Jessica welcomed Birdie in 2019, she was left with a lot of excess weight, which she attributes to a poor diet. "I went to a nutritionist, and I needed to get my eating habits right," she recently told Extra. She follows Harley Pasternak's The Body Reset diet, eating three healthy, protein-packed meals a day and two snacks, such as almonds. 

Harley Pasternak, Jessica's trainer, doesn't like to use scales. "I never work with scales. My work with her is more about the habits she's created and kept up. And as a byproduct of doing these habits, she lost 100 pounds," he told People. "I have no idea how much I weigh," she added to Today. "I just want to feel good and be able to zip my pants up. If I don't, I have another size. I have every size."

Jessica exercises with Pasternak regularly. At one point she was doing 45-minute strength and weight training sessions three days a week. Walking is a huge part of their program. At first, Pasternak had her walking 6,000 steps per day, eventually building up to 14,000, per E! News. "It's a social thing that she can do with her kids," Pasternak said about walking.

Jessica also loves yoga. What makes the zen practice great for losing weight? "Researchers found that people who practiced yoga for at least 30 minutes once a week for at least four years, gained less weight during middle adulthood," says Harvard Health. "People who were overweight actually lost weight. Overall, those who practiced yoga had lower body mass indexes (BMIs) compared with those who did not practice yoga. Researchers attributed this to mindfulness. Mindful eating can lead to a more positive relationship with food and eating."

In a new interview with Bustle, Jessica confronted weight loss drug rumors "Oh Lord. I mean, it is not (Ozempic)," she said, referring to how she's lost weight. "It's willpower. I'm like, do people want me to be drinking again? Because that's when I was heavier. Or they want me to be having another baby? My body can't do it."