"Where I come from, we believe in something we call a 40-day break after the baby," the Brazilian model and mother of two -- they also have 18-month-old son Levi -- tells StyleList. "You have to let your body do its own thing. You give it time to recover and let everything settle down."
She adds: "You kind of respect all the hard work your body has just done and give it a break. For these 40 days, you really take it easy. By that I mean no sex, light, healthy food, no trips to the gym. Then, after 40 days, you are good to go."
Although the Shear Genius host says the reprieve -- which is a typical recommendation for most new moms -- "is nice" because "there is not so much pressure" to rush back into anything, she is starting to struggle.
Unfortunately for McConaughey, it's not the sex she misses most.
"I confess, I am getting a little anxious to workout. I miss it," she says. "Not just to get my body back in shape, but for me, for my head!"