Molly Sims in Bathing Suit is "Ready for a Day by the Pool"

Molly Sims spent her July 4th weekend heating up the Hamptons in her swimsuit! The 49-year-old supermodel shared some snaps over the holiday, including a few of herself wearing a pink bathing suit holding a matching glass of rosé. "Flamingo's are my spirit animal," she captioned one of the snaps, posing like one of the elegant pink birds. In another she revealed that she was "ready for a day by the pool." How does she make 49 look like 29? Read on to learn 10 ways Molly Sims 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!

Molly doesn't go on drastic diets. "It's more about living healthy and how you're feeling," she told Women's Health. "I truly, truly don't like the word 'diet.' I don't even like the scale. I use a pair of jeans; the jeans don't lie I can tell you that."

She is also totally committed to fitness and a healthy way of eating. "This does not come naturally," she told Shape. "I have to work out 60 to 90 minutes at least five days a week and stick to a high- fiber, low-calorie eating plan." "You're not in this alone. Invite friends or co-workers to join you when you exercise or go on walks. Work out with your partner or other loved ones. Play soccer with your kids. Organize a group of neighbors to take fitness classes at a local health club or work out together virtually on video," says the Mayo Clinic.

Molly does HIIT style workouts, after years of being a cardio queen. "I used to be that girl who wouldn't pick up the 2-lb weights at SoulCycle with the fear that I'd bulk. That mentality has shifted drastically," she explained on her blog. 

Molly's workouts are short but sweet. "On good days, workout. On bad days, workout harder," she captioned it. "Today's circuit is what I do when I just have 20 minutes with @lauralizkeller [Sims' personal trainer] to get it in and still break a sweat!" Usually she does 45 second intervals of the following, with the entire set repeated two to three times: jumping jacks, modified pushups, tricep dips, squat jumps, leg raises, burpees, ab lateral bend and hold. To make it harder, she uses ankle and wrist weights the entire time.

Molly swears by intermittent fasting. Usually she starts the day with a smoothie with blueberries, almond milk, Vital Proteins protein, and greens at noon. She finishes her last meal of the day by 7 p.m.

Molly's diet is centered around mostly veggies, lean proteins, and fresh fruits. "I tend to stay away from anything super sugary, like orange juice grapefruit juice, because it really spikes me," she told  Women's Health. "I try to stay away from dried fruits; it's ultimately full of sugar."

Molly minimizes her gluten intake. "It's not that I'm celiac; I just feel better when I have less of it," she told Women's Health. "I don't care if I'm being rude to the rest of the table," she added to Shape, revealing that she always orders a salad first thing after sitting down at a table to keep herself from snacking on carbs. Then I'm not tempted to reach for that bread."

Molly fuels up on healthy fats. "I would have never eaten an avocado 10 years ago if you paid me," she told Health. "Like, are you joking? But now, instead of binging [and] not eating all day, eat it and then you won't binge."

Molly sets fitness goals, like "I'm going to get up every morning at 6:30 to work out," she told Shape. "Then, when I've kept with it all week, I give myself something I really want, like a new handbag or a piece of jewelry I'm coveting."

Molly has a great workout buddy: Her husband. "My mom was on my daddy to exercise all the time," she told Shape. "She was like, 'Listen buddy, if I'm doing this, you're doing it too.' and I agree!" She maintains that she and hubby Scott Stuber help keep each other accountable.