So you might be surprised to find out that she absolutely hates working out.
In the mag's August issue (out on newsstands July 29), the Sin City: A Dame to Kill For star gets refreshingly candid about her distaste for hitting the gym.
"I hate working out. It's boring! I really only did it when I had a job that was physically demanding," explained Jessica. "But from age 17 until I was 27, all I did were movies that were physically demanding—so all I did was work out all the time!"
Jessica graces the cover looking fresh-faced in a navy and green dress and beachy waves. She also explained to the mag that at 33 years old, she's feeling better than ever.
"I had this 'Aaagh!' I'm not in my 20s anymore! What does it all mean?' kind of freak-out. [But] I feel much better at 33 than I did at 23, even than I did at 30," she admitted.
And even though Jessica hates working out, she loves eating healthy and serving her kids, Honor, 6, and Haven, 2, nutritious food.
"I have the same food philosophy for myself as I do for my kids. We eat mostly lean protein and fresh fruit and vegetables, nothing processed or from a box, if we can," she explained. "For me, when I don't eat a ton of carbs, I have more energy. But I'll for sure have a piece of chocolate. I will mow through a bowl of guacamole. If I'm not going to have dessert, I'll have a martini."
Clearly her clean living is doing the trick. For someone who hates to workout, we'd say Jessica looks pretty near perfect.