Breastfeeding is mutually beneficial—just ask Scarlett Johansson! The actress recently taped Barbara Walters’ annual 10 Most Fascinating People of 2014 special. It was Johansson’s first TV interview since giving birth to daughter Rose Dauriac on Sept. 4, and in it, she shared how she shed her post-pregnancy pounds. The 30-year-old Avengers: Age of Ultron star explained, “[Breastfeeding is] the best way to get back in shape. [I do] the whole bit. I’m nursing and I love it.” Scarlett, who secretly married Romain Dauriac one month after Rose’s birth, described motherhood as “wonderful,” “very, very magical” and “exhausting.” So, is her bond with her little girl everything she imagined it would be? She said, “The love is just unbelievable. It’s very overwhelming.” The 10 Most Fascinating People of 2014 airs Sunday at 9 p.m. ET on ABC.