It certainly helps! To lose weight while breastfeeding is easy for many new mums, while other mums may find they hold onto their baby weight a little bit longer. What your own body does is normal for you. Nature helps you to lose that pregnancy weight gain more easily by breastfeeding. Eat a sensible, healthy diet while breastfeeding and get some moderate exercise and the weight you gained while pregnant will be easier to lose. So it is easy to get back into shape.