I couldn't recommend WW highly enough - I started it when Charlie was about 4 1/2 months old. He's now just over 6 months and I have lost 11.5 kgs. It is wonderful. Although I know it's easier to organise meals and do exercise when you only have one. I walk with Charlie in the pram about 5 mornings a week and occasionally in the afternoon, and I do yoga after he's gone to bed 2 or 3 times a week. I find that it's important for me to do these things and lose the weight, because it's the only thing I actually do for ME... I have so much more energy since I've been exercising too!