I gained 50lbs last time too and I breast fed my daughter, I can say it's the fastest way to get your body in shape to before. Because our milk contains alot of fat and the fat came from our body, it burns our fat in order to produce more milk for you baby. If course if you do exercise it will double the result la. If you can at least run 30-60mins everyday, I can promise your shape will be better than before tim ar