I'm breastfeeding and I've managed to lose all of my baby weight. Well, all the weight from my second. I'm still hauling around at least and extra 20 lbs from my first! LOL! I just ate healthier. Just because you need to eat more food doesn't mean to eat more junk food. I cut out all white bread and am slowly making the switch to whole grain pastas (my 3 year old does NOT like them!) I snack a couple of times a day, but I try to be healthy. Instead of grabbing the bag of chips, I grab a banana or low fat cottage cheese with peaches. Another favorite snack is peanut butter on a piece of whole wheat bread. You need to eat more calories because you're giving life to another human. They baby is taking some of those calories away from you, just like when you were pregnant. My daughter is 6 months old and just by being careful and watching what I eat, I had lost the 30lbs I gained with her in about 5 months. I don't do any real exercise to speak of, other than chase my toddler around and climb our stairs about 10x a day. Relax, it took you 9 months to put the weight on, it will take some time to take it off. You need to take into account how much you are running. You still need the extra calories to feed the baby. If you absolutely feel you HAVE to diet, Weight Watchers has a diet plan for breastfeeding women.