I'm having the same struggles. Hoping that I can find a gym that has a creche that's suitable now that DS is a little older to get to on the weekends. I've been thinking about getting a bike so that I can pop him on a seat behind me - but I just know that it's my luck that he would hate it and scream like a banshee. I wish I had someone I could leave him with for forty minutes so that I could duck out for a decent walk/slow jog every day. Diet alone just will not get me there after three years of very little physical activity! And so many competing things for time, like mowing and weeding, house chores, washing makes for a busy weekend. So, as you can see, I have every excuse under the sun but I need to stop thinking like that and get a routine happening. Before I completely blimp out!