Before I had children I would exercise right when I got up or as soon as I came home from work. When my oldest two were younger and I became a stay at home mom I would work out during their naps and we took a daily walk to the park, weather permitting. Now that I have four and they don't all nap, I work part time and have a husband who works nights and sleeps during the day I find it harder to prioritize exercise. Mostly I get on the treadmill or do a workout video around 9 pm when they finally all go to sleep. Sometimes when I don't have to work I fit in a walk with the kids in the stroller while the older two are at school. Does it make a difference when the exercise happens as long as it happens? I guess consistency is the key.