Staying in shape?

I know! I used to run or work out almost every day. Then, after we ran the marathon, my motivation really dwindled. And, I like to eat too much. haha! Luckiily I haven't gained too much yet, but I know if I keep at this pace, it won't be pretty. haha.

Every night before I go to bed I say to myself im going to start doing yoga. Evey morning I wake up my determination dwindles. I get a mild workout with cleaning the house and playing with my youngest, but I want to do more but the motivation gets low after all that. Lol

How do you stay shape with kids? I'm having such a hard time staying motivated. This time last year I was training for a marathon and I was eating really healthy. It's all gone down hill! Any suggestions?