Correct, because during a period of pregnancy, mother's body pile up fat that can be use when breastfeed the baby. With breastfeed the excess of the fat will be burned to become energy so that you can be easier to be slim. Beside that your baby also get best food, because according to research baby getting breast milk more intelligent mean the baby which not.

Until your baby have age 4-6 month suggested to give breast milk. During that the mother don't on a diet first. During breastfeed the mother needs calories addition equal 600-800, so that totalize about 2500-2800 calories per day. To fulfill majoring low and nutrition food of fat