"Same as the first one!" the Frozen star, 34, said of expecting another child with husband Dax Shepard. "Really easy, thank God. I've had a lot of friends who have had rough pregnancies and I'm really, really thankful," Bell added. "People are affected differently by hormones, we're all different."
The biggest change this time around has been giving up sugar, which the Neutrogena Naturals spokesperson relinquished right before she got pregnant again. "I did it for thirty days as a challenge, we both did it to see if we could do it," she said of her husband. "The end of thirty days, we ate a bunch of brownies and cookies and nonsense. And within five minutes we looked at each other and went, 'Oh my god. I'm going to barf. This is toxic.' It simply felt like our bodies didn't want it."
Instead, Bell replaced her cravings for sugary snacks with healthier options. "The sugars I do now are like, I'll have an apple, I'll have two apples, I'll have peaches, I'll have a huge thing of grapes. Being aware of high fructose corn syrup has made a big difference," she told Us. "When you give up brownies and cake, you won't believe how good an apple will taste. Brownies are good, but I don't feel good when I eat them anymore."
As for how her daughter Lincoln, 17 months, feels about soon becoming an older sibling? "I think [she understands], but you can't be sure what's going on in her brain," Bell joked. "She might not get it, she might think mommy's just gaining weight. I don't know!"
The Veronica Mars alum shared a few of her daughter's latest milestones, revealing that she's talking "a bit." Baby Lincoln, though, has found her sweet spot in another language! "She signs a lot, which is nice," Bell told Us. "There's a lot of research to suggest that they will be happier if they can communicate before their verbal skills are developed," she said of her daughter's sign language skills. "There's a time when they can understand everything you're saying but their verbal scores don't exist."
While Lincoln is already communicating, her mom told Us that she's still very much a little girl. "It's the tantrum stage," Bell said. "But she can sign now and she knows 40-50 signs! I can talk to her and she'll sign in three, four word sentences which is really amazing. She'll come in the kitchen and be like [signing] 'More crackers please!' And I'm like, 'Yes, okay!'"
Bell mused of her little girl: "She's MENSA, without a question!? She's the smartest baby ever!"